454
454 is a composite number, even, a calendar year.
454 (four hundred fifty-four) is an even 3-digit number. It is a composite number with 4 divisors, and factors as 2 × 227. Its digits read the same forwards and backwards, so it is a palindromic number. Written other ways, in Roman numerals it is CDLIV and in binary, 111000110.
Interestingness
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.
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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
Primality
Prime factorization: 2 × 227
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√454 = [21; (3, 3, 1, 13, 2, 3, 2, 1, 1, 4, 6, 1, 7, 1, 1, 1, 20, 1, 1, 1, 7, 1, 6, 4, …)]
Period length 34 — the block in parentheses repeats forever.
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)
- Scientific notation
- 4.54 × 10²
- As a duration
- 454 s = 7 minutes, 34 seconds
As an angle
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
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'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.
UTF-8 encoding: C7 86 (2 bytes).
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.
Heard as a frequency, 454 Hz is closest to:
- Concert pitch (A4 = 440 Hz): A♯4 (466.2 Hz, -46¢ — about midway to A4)
- Scientific pitch (C4 = 256 Hz): A♯4 (456.1 Hz, -8¢)
- Baroque pitch (A4 = 415 Hz): B4 (465.8 Hz, -45¢ — about midway to A♯4)
Related reading
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.