5,565
5,565 is a composite number, odd.
5,565 (five thousand five hundred sixty-five) is an odd 4-digit number. It is a composite number with 16 divisors, and factors as 3 × 5 × 7 × 53. It is the 105th triangular number. Written other ways, in hexadecimal, 0x15BD.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 4
- Digit sum
- 21
- Digit product
- 750
- Digital root
- 3
- Palindrome
- No
- Bit width
- 13 bits
- Reversed
- 5,655
- Recamán's sequence
- a(3,378) = 5,565
- Square (n²)
- 30,969,225
- Cube (n³)
- 172,343,737,125
- Divisor count
- 16
- σ(n) — sum of divisors
- 10,368
- φ(n) — Euler's totient
- 2,496
- Sum of prime factors
- 68
Primality
Prime factorization: 3 × 5 × 7 × 53
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√5,565 = [74; (1, 1, 2, 36, 1, 8, 1, 36, 2, 1, 1, 148)]
Period length 12 — the block in parentheses repeats forever.
Representations
- In words
- five thousand five hundred sixty-five
- Ordinal
- 5565th
- Binary
- 1010110111101
- Octal
- 12675
- Hexadecimal
- 0x15BD
- Base64
- Fb0=
- One's complement
- 59,970 (16-bit)
- Scientific notation
- 5.565 × 10³
- As a duration
- 5,565 s = 1 hour, 32 minutes, 45 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹 𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵εφξεʹ
- Mayan (base 20)
- 𝋭·𝋲·𝋥
- Chinese
- 五千五百六十五
- Chinese (financial)
- 伍仟伍佰陸拾伍
Digit at this position in famous constants
- π — Pi (π)
- Digit 5,565 = 6
- e — Euler's number (e)
- Digit 5,565 = 5
- φ — Golden ratio (φ)
- Digit 5,565 = 2
- √2 — Pythagoras's (√2)
- Digit 5,565 = 3
- ln 2 — Natural log of 2
- Digit 5,565 = 9
- γ — Euler-Mascheroni (γ)
- Digit 5,565 = 4
Also seen as
UTF-8 encoding: E1 96 BD (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.21.189.
- Address
- 0.0.21.189
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.21.189
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 5,565 Hz is closest to:
- Concert pitch (A4 = 440 Hz): F8 (5587.7 Hz, -7¢)
- Scientific pitch (C4 = 256 Hz): F8 (5467.5 Hz, +31¢)
- Baroque pitch (A4 = 415 Hz): F♯8 (5583.6 Hz, -6¢)
The digit sequence 5565 first appears in π at position 3,554 of the decimal expansion (the 3,554ordinal-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
- Triangular numbers — 1, 3, 6, 10, 15 … the counting numbers stacked into triangles, and Gauss's famous shortcut for summing them.
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.