Number

455

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

Arithmetic Number Deficient Number Evil Number Recamán's Sequence Sphenic Number Squarefree Tetrahedral Year

Historical context — 455 AD

Calendar year

Year 455 (CDLV) was a common year starting on Saturday of the Julian calendar.

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Historical context — 455 BC

Calendar year

Year 455 BC was a year of the pre-Julian Roman calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 · English fallback 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: Friday
January 1, 455
Ended on: Friday
December 31, 455
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 450s
450–459
Century: 5th century
401–500
Millennium: 1st millennium
1–1000
Years ago: 1,571
1571 years before 2026.

In other calendars

Hebrew: 4215 / 4216 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Wood zodiac:Goat
Sexagenary cycle position 32 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 998 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 447 / 448 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 377 / 376 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 14
Digit product: 100
Digital root: 5
Palindrome: No
Bit width: 9 bits
Reversed: 554
Recamán's sequence: a(178) = 455
Square (n²): 207,025
Cube (n³): 94,196,375
Divisor count: 8
σ(n) — sum of divisors: 672
φ(n) — Euler's totient: 288
Sum of prime factors: 25

Primality

Prime factorization: 5 × 7 × 13

Nearest primes: 449 (−6) · 457 (+2)

Divisors & multiples

All divisors (8)

1 · 5 · 7 · 13 · 35 · 65 · 91 · 455

Aliquot sum (sum of proper divisors): 217

Factor pairs (a × b = 455)

1 × 455

5 × 91

7 × 65

13 × 35

First multiples

455 · 910 (double) · 1,365 · 1,820 · 2,275 · 2,730 · 3,185 · 3,640 · 4,095 · 4,550

Sums & aliquot sequence

As consecutive integers: 227 + 228 89 + 90 + 91 + 92 + 93 62 + 63 + … + 68 41 + 42 + … + 50

Aliquot sequence: 455 → 217 → 39 → 17 → 1 → 0 — terminates at zero

Representations

In words: four hundred fifty-five
Ordinal: 455th
Roman numeral: CDLV
Binary: 111000111
Octal: 707
Hexadecimal: 0x1C7
Base64: Acc=
One's complement: 65,080 (16-bit)

In other bases

ternary (3) 121212

quaternary (4) 13013

quinary (5) 3310

senary (6) 2035

septenary (7) 1220

nonary (9) 555

undecimal (11) 384

duodecimal (12) 31b

tridecimal (13) 290

tetradecimal (14) 247

pentadecimal (15) 205

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): υνεʹ
Mayan (base 20): 𝋡·𝋢·𝋯
Chinese: 四百五十五
Chinese (financial): 肆佰伍拾伍

In other modern scripts

Eastern Arabic ٤٥٥ Devanagari ४५५ Bengali ৪৫৫ Tamil ௪௫௫ Thai ๔๕๕ Tibetan ༤༥༥ Khmer ៤៥៥ Lao ໔໕໕ Burmese ၄၅၅

Digit at this position in famous constants

π — Pi (π): Digit 455 = 4
e — Euler's number (e): Digit 455 = 7
φ — Golden ratio (φ): Digit 455 = 1
√2 — Pythagoras's (√2): Digit 455 = 9
ln 2 — Natural log of 2: Digit 455 = 9
γ — Euler-Mascheroni (γ): Digit 455 = 0

Also seen as

Unicode codepoint

Latin Capital Letter Lj

U+01C7

Uppercase letter (Lu)

UTF-8 encoding: C7 87 (2 bytes).

Lookup U+01C7 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#0001C7

RGB(0, 1, 199)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.199.

Address: 0.0.1.199
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.1.199

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