13,155
13,155 is a composite number, odd.
13,155 (thirteen thousand one hundred fifty-five) is an odd 5-digit number. It is a composite number with 8 divisors, and factors as 3 × 5 × 877. Written other ways, in hexadecimal, 0x3363.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 15
- Digit product
- 75
- Digital root
- 6
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 55,131
- Recamán's sequence
- a(47,965) = 13,155
- Square (n²)
- 173,054,025
- Cube (n³)
- 2,276,525,698,875
- Divisor count
- 8
- σ(n) — sum of divisors
- 21,072
- φ(n) — Euler's totient
- 7,008
- Sum of prime factors
- 885
Primality
Prime factorization: 3 × 5 × 877
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√13,155 = [114; (1, 2, 3, 1, 1, 4, 8, 1, 1, 1, 1, 10, 3, 7, 3, 10, 1, 1, 1, 1, 8, 4, 1, 1, …)]
Period length 28 — the block in parentheses repeats forever.
Representations
- In words
- thirteen thousand one hundred fifty-five
- Ordinal
- 13155th
- Binary
- 11001101100011
- Octal
- 31543
- Hexadecimal
- 0x3363
- Base64
- M2M=
- One's complement
- 52,380 (16-bit)
- Scientific notation
- 1.3155 × 10⁴
- As a duration
- 13,155 s = 3 hours, 39 minutes, 15 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ιγρνεʹ
- Mayan (base 20)
- 𝋡·𝋬·𝋱·𝋯
- Chinese
- 一萬三千一百五十五
- Chinese (financial)
- 壹萬參仟壹佰伍拾伍
Digit at this position in famous constants
- π — Pi (π)
- Digit 13,155 = 4
- e — Euler's number (e)
- Digit 13,155 = 0
- φ — Golden ratio (φ)
- Digit 13,155 = 3
- √2 — Pythagoras's (√2)
- Digit 13,155 = 9
- ln 2 — Natural log of 2
- Digit 13,155 = 6
- γ — Euler-Mascheroni (γ)
- Digit 13,155 = 0
Also seen as
UTF-8 encoding: E3 8D A3 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.51.99.
- Address
- 0.0.51.99
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.51.99
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 13,155 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G♯9 (13289.8 Hz, -18¢)
- Scientific pitch (C4 = 256 Hz): G♯9 (13004 Hz, +20¢)
- Baroque pitch (A4 = 415 Hz): A9 (13280 Hz, -16¢)
The digit sequence 13155 first appears in π at position 122,163 of the decimal expansion (the 122,163ordinal-suffix:rd digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.