Number

529

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

529 (five hundred twenty-nine) is an odd 3-digit number. It is a composite number with 3 divisors, and factors as 23². It is a perfect square (23²). Written other ways, in Roman numerals it is DXXIX and in binary, 1000010001.

Cube-Free Deficient Number Lazy Caterer Number Odious Number Perfect Square Pernicious Number Powerful Number Recamán's Sequence Semiprime Year

Interestingness

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6 notable facts · grade B

517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541

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Historical context — 529 AD

Calendar year

Year 529 (DXXIX) was a common year starting on Monday of the Julian calendar.

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

Historical context — 529 BC

Decade

This article concerns the period 529 BC – 520 BC.

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: Saturday
January 1, 529
Ended on: Saturday
December 31, 529
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 520s
520–529
Century: 6th century
501–600
Millennium: 1st millennium
1–1000
Years ago: 1,497
1497 years before 2026.

In other calendars

Hebrew: 4289 / 4290 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Earth zodiac:Rooster
Sexagenary cycle position 46 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1072 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 521 / 522 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 451 / 450 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 16
Digit product: 90
Digital root: 7
Palindrome: No
Bit width: 10 bits
Reversed: 925
Recamán's sequence: a(1,201) = 529
Square (n²): 279,841
Cube (n³): 148,035,889
Square root (√n): 23
Divisor count: 3
σ(n) — sum of divisors: 553
φ(n) — Euler's totient: 506
Sum of prime factors: 46

Primality

Prime factorization: 23 ²

Nearest primes: 523 (−6) · 541 (+12)

Divisors & multiples

All divisors (3)

1 · 23 · 529

Aliquot sum (sum of proper divisors): 24

Factor pairs (a × b = 529)

1 × 529

23 × 23

First multiples

529 · 1,058 (double) · 1,587 · 2,116 · 2,645 · 3,174 · 3,703 · 4,232 · 4,761 · 5,290

Sums & aliquot sequence

As a sum of two squares: 0² + 23²

As consecutive integers: 264 + 265 12 + 13 + … + 34

Aliquot sequence: 529 → 24 → 36 → 55 → 17 → 1 → 0 — terminates at zero

Representations

In words: five hundred twenty-nine
Ordinal: 529th
Roman numeral: DXXIX
Binary: 1000010001
Octal: 1021
Hexadecimal: 0x211
Base64: AhE=
One's complement: 65,006 (16-bit)
Scientific notation: 5.29 × 10²
As a duration: 529 s = 8 minutes, 49 seconds

In other bases

ternary (3) 201121

quaternary (4) 20101

quinary (5) 4104

senary (6) 2241

septenary (7) 1354

nonary (9) 647

undecimal (11) 441

duodecimal (12) 381

tridecimal (13) 319

tetradecimal (14) 29b

pentadecimal (15) 254

As an angle

529° = 1 × 360° + 169°

169° ≈ 2.95 rad

Compass bearing: S (south)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): φκθʹ
Mayan (base 20): 𝋡·𝋦·𝋩
Chinese: 五百二十九
Chinese (financial): 伍佰貳拾玖

In other modern scripts

Eastern Arabic ٥٢٩ Devanagari ५२९ Bengali ৫২৯ Tamil ௫௨௯ Thai ๕๒๙ Tibetan ༥༢༩ Khmer ៥២៩ Lao ໕໒໙ Burmese ၅၂၉

Digit at this position in famous constants

π — Pi (π): Digit 529 = 4
e — Euler's number (e): Digit 529 = 2
φ — Golden ratio (φ): Digit 529 = 7
√2 — Pythagoras's (√2): Digit 529 = 3
ln 2 — Natural log of 2: Digit 529 = 0
γ — Euler-Mascheroni (γ): Digit 529 = 5

Also seen as

Unicode codepoint

Latin Small Letter R With Double Grave

U+0211

Lowercase letter (Ll)

UTF-8 encoding: C8 91 (2 bytes).

Lookup U+0211 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000211

RGB(0, 2, 17)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.2.17.

Address: 0.0.2.17
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.2.17

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

Musical pitch

Heard as a frequency, 529 Hz is closest to:

Concert pitch (A4 = 440 Hz): C5 (523.3 Hz, +19¢)
Scientific pitch (C4 = 256 Hz): C♯5 (542.4 Hz, -43¢)
Baroque pitch (A4 = 415 Hz): C♯5 (522.9 Hz, +20¢)