520,409
520,409 is a prime, odd.
520,409 (five hundred twenty thousand four hundred nine) is an odd 6-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0x7F0D9.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 20
- Digit product
- 0
- Digital root
- 2
- Palindrome
- No
- Bit width
- 19 bits
- Reversed
- 904,025
- Square (n²)
- 270,825,527,281
- Cube (n³)
- 140,940,041,826,777,929
- Divisor count
- 2
- σ(n) — sum of divisors
- 520,410
- φ(n) — Euler's totient
- 520,408
Primality
520,409 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√520,409 = [721; (2, 1, 1, 5, 1, 5, 3, 2, 3, 2, 2, 7, 6, 1, 35, 4, 1, 3, 3, 1, 4, 35, 1, 6, …)]
Period length 37 — the block in parentheses repeats forever.
Representations
- In words
- five hundred twenty thousand four hundred nine
- Ordinal
- 520409th
- Binary
- 1111111000011011001
- Octal
- 1770331
- Hexadecimal
- 0x7F0D9
- Base64
- B/DZ
- One's complement
- 4,294,446,886 (32-bit)
- Scientific notation
- 5.20409 × 10⁵
- As a duration
- 520,409 s = 6 days, 33 minutes, 29 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵φκυθʹ
- Chinese
- 五十二萬零四百零九
- Chinese (financial)
- 伍拾貳萬零肆佰零玖
Also seen as
As an unsigned 32-bit integer, this is the IPv4 address 0.7.240.217.
- Address
- 0.7.240.217
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.7.240.217
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 520,409 and was likely granted around 1894.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 520409 first appears in π at position 304,478 of the decimal expansion (the 304,478ordinal-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.
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.