2,159
2,159 is a composite number, odd.
2,159 (two thousand one hundred fifty-nine) is an odd 4-digit number. It is a composite number with 4 divisors, and factors as 17 × 127. Written other ways, in Roman numerals it is MMCLIX and in binary, 100001101111.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 4
- Digit sum
- 17
- Digit product
- 90
- Digital root
- 8
- Palindrome
- No
- Bit width
- 12 bits
- Reversed
- 9,512
- Recamán's sequence
- a(3,433) = 2,159
- Square (n²)
- 4,661,281
- Cube (n³)
- 10,063,705,679
- Divisor count
- 4
- σ(n) — sum of divisors
- 2,304
- φ(n) — Euler's totient
- 2,016
- Sum of prime factors
- 144
Primality
Prime factorization: 17 × 127
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√2,159 = [46; (2, 6, 1, 1, 1, 6, 2, 92)]
Period length 8 — the block in parentheses repeats forever.
Representations
- In words
- two thousand one hundred fifty-nine
- Ordinal
- 2159th
- Roman numeral
- MMCLIX
- Binary
- 100001101111
- Octal
- 4157
- Hexadecimal
- 0x86F
- Base64
- CG8=
- One's complement
- 63,376 (16-bit)
- Scientific notation
- 2.159 × 10³
- As a duration
- 2,159 s = 35 minutes, 59 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵βρνθʹ
- Mayan (base 20)
- 𝋥·𝋧·𝋳
- Chinese
- 二千一百五十九
- Chinese (financial)
- 貳仟壹佰伍拾玖
Digit at this position in famous constants
- π — Pi (π)
- Digit 2,159 = 3
- e — Euler's number (e)
- Digit 2,159 = 3
- φ — Golden ratio (φ)
- Digit 2,159 = 4
- √2 — Pythagoras's (√2)
- Digit 2,159 = 2
- ln 2 — Natural log of 2
- Digit 2,159 = 3
- γ — Euler-Mascheroni (γ)
- Digit 2,159 = 5
Also seen as
As an unsigned 32-bit integer, this is the IPv4 address 0.0.8.111.
- Address
- 0.0.8.111
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.8.111
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 2,159 Hz is closest to:
- Concert pitch (A4 = 440 Hz): C♯7 (2217.5 Hz, -46¢ — about midway to C7)
- Scientific pitch (C4 = 256 Hz): C♯7 (2169.8 Hz, -9¢)
- Baroque pitch (A4 = 415 Hz): D7 (2215.8 Hz, -45¢ — about midway to C♯7)
The digit sequence 2159 first appears in π at position 4,644 of the decimal expansion (the 4,644ordinal-suffix:th 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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.