55,820
55,820 is a composite number, even.
55,820 (fifty-five thousand eight hundred twenty) is an even 5-digit number. It is a composite number with 12 divisors, and factors as 2² × 5 × 2,791. Its proper divisors sum to 61,444, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xDA0C.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 20
- Digit product
- 0
- Digital root
- 2
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 2,855
- Recamán's sequence
- a(292,180) = 55,820
- Square (n²)
- 3,115,872,400
- Cube (n³)
- 173,927,997,368,000
- Divisor count
- 12
- σ(n) — sum of divisors
- 117,264
- φ(n) — Euler's totient
- 22,320
- Sum of prime factors
- 2,800
Primality
Prime factorization: 2 2 × 5 × 2791
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√55,820 = [236; (3, 1, 4, 4, 2, 7, 3, 2, 1, 15, 1, 1, 2, 8, 24, 1, 3, 94, 3, 1, 24, 8, 2, 1, …)]
Period length 36 — the block in parentheses repeats forever.
Representations
- In words
- fifty-five thousand eight hundred twenty
- Ordinal
- 55820th
- Binary
- 1101101000001100
- Octal
- 155014
- Hexadecimal
- 0xDA0C
- Base64
- 2gw=
- One's complement
- 9,715 (16-bit)
- Scientific notation
- 5.582 × 10⁴
- As a duration
- 55,820 s = 15 hours, 30 minutes, 20 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋 𒌋𒌋
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵νεωκʹ
- Mayan (base 20)
- 𝋦·𝋳·𝋫·𝋠
- Chinese
- 五萬五千八百二十
- Chinese (financial)
- 伍萬伍仟捌佰貳拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 55,820 = 5
- e — Euler's number (e)
- Digit 55,820 = 6
- φ — Golden ratio (φ)
- Digit 55,820 = 6
- √2 — Pythagoras's (√2)
- Digit 55,820 = 1
- ln 2 — Natural log of 2
- Digit 55,820 = 2
- γ — Euler-Mascheroni (γ)
- Digit 55,820 = 9
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 55820, here are decompositions:
- 3 + 55817 = 55820
- 7 + 55813 = 55820
- 13 + 55807 = 55820
- 103 + 55717 = 55820
- 109 + 55711 = 55820
- 139 + 55681 = 55820
- 157 + 55663 = 55820
- 181 + 55639 = 55820
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.0.218.12.
- Address
- 0.0.218.12
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.218.12
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 55820 first appears in π at position 191,189 of the decimal expansion (the 191,189ordinal-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.