61,409
61,409 is a prime, odd.
61,409 (sixty-one thousand four hundred nine) is an odd 5-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0xEFE1.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 20
- Digit product
- 0
- Digital root
- 2
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 90,416
- Recamán's sequence
- a(44,406) = 61,409
- Square (n²)
- 3,771,065,281
- Cube (n³)
- 231,577,347,840,929
- Divisor count
- 2
- σ(n) — sum of divisors
- 61,410
- φ(n) — Euler's totient
- 61,408
Primality
61,409 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√61,409 = [247; (1, 4, 4, 1, 1, 3, 3, 7, 3, 8, 12, 3, 1, 2, 2, 1, 11, 2, 1, 1, 2, 5, 1, 4, …)]
Representations
- In words
- sixty-one thousand four hundred nine
- Ordinal
- 61409th
- Binary
- 1110111111100001
- Octal
- 167741
- Hexadecimal
- 0xEFE1
- Base64
- 7+E=
- One's complement
- 4,126 (16-bit)
- Scientific notation
- 6.1409 × 10⁴
- As a duration
- 61,409 s = 17 hours, 3 minutes, 29 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ξαυθʹ
- Mayan (base 20)
- 𝋧·𝋭·𝋪·𝋩
- Chinese
- 六萬一千四百零九
- Chinese (financial)
- 陸萬壹仟肆佰零玖
Digit at this position in famous constants
- π — Pi (π)
- Digit 61,409 = 9
- e — Euler's number (e)
- Digit 61,409 = 8
- φ — Golden ratio (φ)
- Digit 61,409 = 4
- √2 — Pythagoras's (√2)
- Digit 61,409 = 8
- ln 2 — Natural log of 2
- Digit 61,409 = 9
- γ — Euler-Mascheroni (γ)
- Digit 61,409 = 1
Also seen as
As an unsigned 32-bit integer, this is the IPv4 address 0.0.239.225.
- Address
- 0.0.239.225
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.239.225
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 61409 first appears in π at position 79,794 of the decimal expansion (the 79,794ordinal-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
- 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.