155,801
155,801 is a prime, odd.
155,801 (one hundred fifty-five thousand eight hundred one) is an odd 6-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0x26099.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 20
- Digit product
- 0
- Digital root
- 2
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 108,551
- Recamán's sequence
- a(206,262) = 155,801
- Square (n²)
- 24,273,951,601
- Cube (n³)
- 3,781,905,933,387,401
- Divisor count
- 2
- σ(n) — sum of divisors
- 155,802
- φ(n) — Euler's totient
- 155,800
Primality
155,801 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√155,801 = [394; (1, 2, 1, 1, 9, 3, 2, 1, 2, 8, 3, 3, 1, 1, 7, 1, 2, 1, 10, 2, 1, 1, 1, 11, …)]
Representations
- In words
- one hundred fifty-five thousand eight hundred one
- Ordinal
- 155801st
- Binary
- 100110000010011001
- Octal
- 460231
- Hexadecimal
- 0x26099
- Base64
- AmCZ
- One's complement
- 4,294,811,494 (32-bit)
- Scientific notation
- 1.55801 × 10⁵
- As a duration
- 155,801 s = 1 day, 19 hours, 16 minutes, 41 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓏺
- Greek (Milesian)
- ͵ρνεωαʹ
- Mayan (base 20)
- 𝋳·𝋩·𝋪·𝋡
- Chinese
- 一十五萬五千八百零一
- Chinese (financial)
- 壹拾伍萬伍仟捌佰零壹
Also seen as
UTF-8 encoding: F0 A6 82 99 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.96.153.
- Address
- 0.2.96.153
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.96.153
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 155,801 and was likely granted around 1873.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.