138,525
138,525 is a composite number, odd.
138,525 (one hundred thirty-eight thousand five hundred twenty-five) is an odd 6-digit number. It is a composite number with 12 divisors, and factors as 3 × 5² × 1,847. Written other ways, in hexadecimal, 0x21D1D.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 24
- Digit product
- 1,200
- Digital root
- 6
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 525,831
- Recamán's sequence
- a(491,777) = 138,525
- Square (n²)
- 19,189,175,625
- Cube (n³)
- 2,658,180,553,453,125
- Divisor count
- 12
- σ(n) — sum of divisors
- 229,152
- φ(n) — Euler's totient
- 73,840
- Sum of prime factors
- 1,860
Primality
Prime factorization: 3 × 5 2 × 1847
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,525 = [372; (5, 3, 1, 1, 2, 18, 1, 2, 3, 3, 4, 2, 1, 1, 1, 3, 1, 3, 2, 7, 1, 2, 1, 4, …)]
Representations
- In words
- one hundred thirty-eight thousand five hundred twenty-five
- Ordinal
- 138525th
- Binary
- 100001110100011101
- Octal
- 416435
- Hexadecimal
- 0x21D1D
- Base64
- Ah0d
- One's complement
- 4,294,828,770 (32-bit)
- Scientific notation
- 1.38525 × 10⁵
- As a duration
- 138,525 s = 1 day, 14 hours, 28 minutes, 45 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληφκεʹ
- Mayan (base 20)
- 𝋱·𝋦·𝋦·𝋥
- Chinese
- 一十三萬八千五百二十五
- Chinese (financial)
- 壹拾參萬捌仟伍佰貳拾伍
Also seen as
UTF-8 encoding: F0 A1 B4 9D (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.29.29.
- Address
- 0.2.29.29
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.29.29
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 138,525 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.