Number

497

497 is a composite number, odd, a calendar year.

497 (four hundred ninety-seven) is an odd 3-digit number. It is a composite number with 4 divisors, and factors as 7 × 71. Written other ways, in Roman numerals it is CDXCVII and in binary, 111110001.

Arithmetic Number Cube-Free Deficient Number Evil Number Lazy Caterer Number Recamán's Sequence Semiprime Squarefree Year

Interestingness

★ ★ ★ ★ ☆

6 notable facts · grade B

485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509

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Historical context — 497 AD

Calendar year

Year 497 (CDXCVII) was a common year starting on Wednesday of the Julian calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 Read the full article on Wikipedia →

Historical context — 497 BC

Calendar year

Year 497 BC was a year of the pre-Julian Roman calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 Read the full article on Wikipedia →

Year facts

Year type: Common year
Standard 365-day year; not divisible by 4 (or divisible by 100 but not 400).
Days in year: 365
ISO weeks: 52
Started on: Tuesday
January 1, 497
Ended on: Tuesday
December 31, 497
Friday the 13ths: 2
2 Friday the 13ths this year.
Decade: 490s
490–499
Century: 5th century
401–500
Millennium: 1st millennium
1–1000
Years ago: 1,529
1529 years before 2026.

In other calendars

Hebrew: 4257 / 4258 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Fire zodiac:Ox
Sexagenary cycle position 14 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1040 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 489 / 490 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 419 / 418 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 20
Digit product: 252
Digital root: 2
Palindrome: No
Bit width: 9 bits
Reversed: 794
Recamán's sequence: a(250) = 497
Square (n²): 247,009
Cube (n³): 122,763,473
Divisor count: 4
σ(n) — sum of divisors: 576
φ(n) — Euler's totient: 420
Sum of prime factors: 78

Primality

Prime factorization: 7 × 71

Nearest primes: 491 (−6) · 499 (+2)

Divisors & multiples

All divisors (4)

1 · 7 · 71 · 497

Aliquot sum (sum of proper divisors): 79

Factor pairs (a × b = 497)

1 × 497

7 × 71

First multiples

497 · 994 (double) · 1,491 · 1,988 · 2,485 · 2,982 · 3,479 · 3,976 · 4,473 · 4,970

Sums & aliquot sequence

As consecutive integers: 248 + 249 68 + 69 + … + 74 29 + 30 + … + 42

Aliquot sequence: 497 → 79 → 1 → 0 — terminates at zero

Continued fraction of √n

√497 = [22; (3, 2, 2, 5, 6, 5, 2, 2, 3, 44)]

Period length 10 — the block in parentheses repeats forever.

Representations

In words: four hundred ninety-seven
Ordinal: 497th
Roman numeral: CDXCVII
Binary: 111110001
Octal: 761
Hexadecimal: 0x1F1
Base64: AfE=
One's complement: 65,038 (16-bit)
Scientific notation: 4.97 × 10²
As a duration: 497 s = 8 minutes, 17 seconds

In other bases

ternary (3) 200102

quaternary (4) 13301

quinary (5) 3442

senary (6) 2145

septenary (7) 1310

nonary (9) 612

undecimal (11) 412

duodecimal (12) 355

tridecimal (13) 2c3

tetradecimal (14) 277

pentadecimal (15) 232

Palindromic in base 15, base 16

As an angle

497° = 1 × 360° + 137°

137° ≈ 2.391 rad

Compass bearing: SE (southeast)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): υϟζʹ
Mayan (base 20): 𝋡·𝋤·𝋱
Chinese: 四百九十七
Chinese (financial): 肆佰玖拾柒

In other modern scripts

Eastern Arabic ٤٩٧ Devanagari ४९७ Bengali ৪৯৭ Tamil ௪௯௭ Thai ๔๙๗ Tibetan ༤༩༧ Khmer ៤៩៧ Lao ໔໙໗ Burmese ၄၉၇

Digit at this position in famous constants

π — Pi (π): Digit 497 = 9
e — Euler's number (e): Digit 497 = 7
φ — Golden ratio (φ): Digit 497 = 8
√2 — Pythagoras's (√2): Digit 497 = 2
ln 2 — Natural log of 2: Digit 497 = 4
γ — Euler-Mascheroni (γ): Digit 497 = 5

Also seen as

Unicode codepoint

Latin Capital Letter Dz

U+01F1

Uppercase letter (Lu)

UTF-8 encoding: C7 B1 (2 bytes).

Lookup U+01F1 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#0001F1

RGB(0, 1, 241)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.241.

Address: 0.0.1.241
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.1.241

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Musical pitch

Heard as a frequency, 497 Hz is closest to:

Concert pitch (A4 = 440 Hz): B4 (493.9 Hz, +11¢)
Scientific pitch (C4 = 256 Hz): B4 (483.3 Hz, +49¢ — about midway to C5)
Baroque pitch (A4 = 415 Hz): C5 (493.5 Hz, +12¢)