155,448
155,448 is a composite number, even.
155,448 (one hundred fifty-five thousand four hundred forty-eight) is an even 6-digit number. It is a composite number with 48 divisors, and factors as 2³ × 3² × 17 × 127. Its proper divisors sum to 293,832, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x25F38.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 27
- Digit product
- 3,200
- Digital root
- 9
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 844,551
- Recamán's sequence
- a(477,223) = 155,448
- Square (n²)
- 24,164,080,704
- Cube (n³)
- 3,756,258,017,275,392
- Divisor count
- 48
- σ(n) — sum of divisors
- 449,280
- φ(n) — Euler's totient
- 48,384
- Sum of prime factors
- 156
Primality
Prime factorization: 2 3 × 3 2 × 17 × 127
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√155,448 = [394; (3, 1, 2, 1, 1, 4, 1, 1, 2, 1, 3, 788)]
Period length 12 — the block in parentheses repeats forever.
Representations
- In words
- one hundred fifty-five thousand four hundred forty-eight
- Ordinal
- 155448th
- Binary
- 100101111100111000
- Octal
- 457470
- Hexadecimal
- 0x25F38
- Base64
- Al84
- One's complement
- 4,294,811,847 (32-bit)
- Scientific notation
- 1.55448 × 10⁵
- As a duration
- 155,448 s = 1 day, 19 hours, 10 minutes, 48 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒌋 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρνευμηʹ
- Mayan (base 20)
- 𝋳·𝋨·𝋬·𝋨
- Chinese
- 一十五萬五千四百四十八
- Chinese (financial)
- 壹拾伍萬伍仟肆佰肆拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 155448, here are decompositions:
- 5 + 155443 = 155448
- 61 + 155387 = 155448
- 67 + 155381 = 155448
- 71 + 155377 = 155448
- 131 + 155317 = 155448
- 149 + 155299 = 155448
- 157 + 155291 = 155448
- 179 + 155269 = 155448
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A5 BC B8 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.95.56.
- Address
- 0.2.95.56
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.95.56
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 155,448 and was likely granted around 1873.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 155448 first appears in π at position 950,867 of the decimal expansion (the 950,867ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.