Number

454

454 is a composite number, even, a calendar year.

Arithmetic Number Consecutive Digits Deficient Number Odious Number Palindrome Pernicious Number Recamán's Sequence Semiprime Smith Number Squarefree Year

Historical context — 454 AD

Calendar year

Year 454 (CDLIV) was a common year starting on Friday of the Julian calendar.

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Historical context — 454 BC

Calendar year

Year 454 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: 53
Long year: contains 53 ISO weeks.
Started on: Thursday
January 1, 454
Ended on: Thursday
December 31, 454
Friday the 13ths: 3
3 Friday the 13ths this year.
Decade: 450s
450–459
Century: 5th century
401–500
Millennium: 1st millennium
1–1000
Years ago: 1,572
1572 years before 2026.

In other calendars

Hebrew: 4214 / 4215 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Wood zodiac:Horse
Sexagenary cycle position 31 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 997 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 446 / 447 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 376 / 375 Saka
Indian national calendar; year starts in March.

Properties

Parity: Even
Digit count: 3
Digit sum: 13
Digit product: 80
Digital root: 4
Palindrome: Yes
Bit width: 9 bits
Recamán's sequence: a(180) = 454
Square (n²): 206,116
Cube (n³): 93,576,664
Divisor count: 4
σ(n) — sum of divisors: 684
φ(n) — Euler's totient: 226
Sum of prime factors: 229

Primality

Prime factorization: 2 × 227

Nearest primes: 449 (−5) · 457 (+3)

Divisors & multiples

All divisors (4)

1 · 2 · 227 (half) · 454

Aliquot sum (sum of proper divisors): 230

Factor pairs (a × b = 454)

1 × 454

2 × 227

First multiples

454 · 908 (double) · 1,362 · 1,816 · 2,270 · 2,724 · 3,178 · 3,632 · 4,086 · 4,540

Sums & aliquot sequence

As consecutive integers: 112 + 113 + 114 + 115

Aliquot sequence: 454 → 230 → 202 → 104 → 106 → 56 → 64 → 63 → 41 → 1 → 0 — terminates at zero

Representations

In words: four hundred fifty-four
Ordinal: 454th
Roman numeral: CDLIV
Binary: 111000110
Octal: 706
Hexadecimal: 0x1C6
Base64: AcY=
One's complement: 65,081 (16-bit)

In other bases

ternary (3) 121211

quaternary (4) 13012

quinary (5) 3304

senary (6) 2034

septenary (7) 1216

nonary (9) 554

undecimal (11) 383

duodecimal (12) 31a

tridecimal (13) 28c

tetradecimal (14) 246

pentadecimal (15) 204

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
Greek (Milesian): υνδʹ
Mayan (base 20): 𝋡·𝋢·𝋮
Chinese: 四百五十四
Chinese (financial): 肆佰伍拾肆

In other modern scripts

Eastern Arabic ٤٥٤ Devanagari ४५४ Bengali ৪৫৪ Tamil ௪௫௪ Thai ๔๕๔ Tibetan ༤༥༤ Khmer ៤៥៤ Lao ໔໕໔ Burmese ၄၅၄

Digit at this position in famous constants

π — Pi (π): Digit 454 = 4
e — Euler's number (e): Digit 454 = 0
φ — Golden ratio (φ): Digit 454 = 3
√2 — Pythagoras's (√2): Digit 454 = 6
ln 2 — Natural log of 2: Digit 454 = 1
γ — Euler-Mascheroni (γ): Digit 454 = 1

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 454, here are decompositions:

5 + 449 = 454
11 + 443 = 454
23 + 431 = 454
53 + 401 = 454
71 + 383 = 454
101 + 353 = 454
107 + 347 = 454
137 + 317 = 454

Showing the first eight; more decompositions exist.

Unicode codepoint

Latin Small Letter Dz With Caron

U+01C6

Lowercase letter (Ll)

UTF-8 encoding: C7 86 (2 bytes).

Lookup U+01C6 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#0001C6

RGB(0, 1, 198)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.198.

Address: 0.0.1.198
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.1.198

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