21,053
21,053 is a composite number, odd.
21,053 (twenty-one thousand fifty-three) is an odd 5-digit number. It is a composite number with 4 divisors, and factors as 37 × 569. Written other ways, in hexadecimal, 0x523D.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 11
- Digit product
- 0
- Digital root
- 2
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 35,012
- Recamán's sequence
- a(41,733) = 21,053
- Square (n²)
- 443,228,809
- Cube (n³)
- 9,331,296,115,877
- Divisor count
- 4
- σ(n) — sum of divisors
- 21,660
- φ(n) — Euler's totient
- 20,448
- Sum of prime factors
- 606
Primality
Prime factorization: 37 × 569
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√21,053 = [145; (10, 2, 1, 3, 2, 2, 3, 1, 2, 10, 290)]
Period length 11 — the block in parentheses repeats forever.
Representations
- In words
- twenty-one thousand fifty-three
- Ordinal
- 21053rd
- Binary
- 101001000111101
- Octal
- 51075
- Hexadecimal
- 0x523D
- Base64
- Uj0=
- One's complement
- 44,482 (16-bit)
- Scientific notation
- 2.1053 × 10⁴
- As a duration
- 21,053 s = 5 hours, 50 minutes, 53 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓆼𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺
- Greek (Milesian)
- ͵κανγʹ
- Mayan (base 20)
- 𝋢·𝋬·𝋬·𝋭
- Chinese
- 二萬一千零五十三
- Chinese (financial)
- 貳萬壹仟零伍拾參
Digit at this position in famous constants
- π — Pi (π)
- Digit 21,053 = 2
- e — Euler's number (e)
- Digit 21,053 = 2
- φ — Golden ratio (φ)
- Digit 21,053 = 1
- √2 — Pythagoras's (√2)
- Digit 21,053 = 2
- ln 2 — Natural log of 2
- Digit 21,053 = 4
- γ — Euler-Mascheroni (γ)
- Digit 21,053 = 4
Also seen as
UTF-8 encoding: E5 88 BD (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.82.61.
- Address
- 0.0.82.61
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.82.61
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 21053 first appears in π at position 117,392 of the decimal expansion (the 117,392ordinal-suffix:nd 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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.