Number
80,021
80,021 is a prime, odd.
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 11
- Digit product
- 0
- Digital root
- 2
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 12,008
- Recamán's sequence
- a(120,065) = 80,021
- Square (n²)
- 6,403,360,441
- Cube (n³)
- 512,403,305,849,261
- Divisor count
- 2
- σ(n) — sum of divisors
- 80,022
- φ(n) — Euler's totient
- 80,020
Primality
80,021 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Aliquot sum (sum of proper divisors):
1
First multiples
80,021
·
160,042
(double)
·
240,063
·
320,084
·
400,105
·
480,126
·
560,147
·
640,168
·
720,189
·
800,210
Sums & aliquot sequence
As a sum of two squares:
185² + 214²
As consecutive integers:
40,010 + 40,011
Representations
- In words
- eighty thousand twenty-one
- Ordinal
- 80021st
- Binary
- 10011100010010101
- Octal
- 234225
- Hexadecimal
- 0x13895
- Base64
- ATiV
- One's complement
- 4,294,887,274 (32-bit)
In other bases
ternary (3)
11001202202
quaternary (4)
103202111
quinary (5)
10030041
senary (6)
1414245
septenary (7)
452204
nonary (9)
131682
undecimal (11)
55137
duodecimal (12)
3a385
tridecimal (13)
2a566
tetradecimal (14)
2123b
pentadecimal (15)
18a9b
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹 𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓎆𓎆𓏺
- Greek (Milesian)
- ͵πκαʹ
- Mayan (base 20)
- 𝋪·𝋠·𝋡·𝋡
- Chinese
- 八萬零二十一
- Chinese (financial)
- 捌萬零貳拾壹
In other modern scripts
Eastern Arabic
٨٠٠٢١
Devanagari
८००२१
Bengali
৮০০২১
Tamil
௮௦௦௨௧
Thai
๘๐๐๒๑
Tibetan
༨༠༠༢༡
Khmer
៨០០២១
Lao
໘໐໐໒໑
Burmese
၈၀၀၂၁
Digit at this position in famous constants
- π — Pi (π)
- Digit 80,021 = 4
- e — Euler's number (e)
- Digit 80,021 = 0
- φ — Golden ratio (φ)
- Digit 80,021 = 5
- √2 — Pythagoras's (√2)
- Digit 80,021 = 9
- ln 2 — Natural log of 2
- Digit 80,021 = 4
- γ — Euler-Mascheroni (γ)
- Digit 80,021 = 2
Also seen as
Unicode codepoint
Egyptian Hieroglyph-13895
U+13895
Other letter (Lo)
UTF-8 encoding: F0 93 A2 95 (4 bytes).
Hex color
#013895
RGB(1, 56, 149)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.1.56.149.
- Address
- 0.1.56.149
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.56.149
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Position in π
The digit sequence 80021 first appears in π at position 213,139 of the decimal expansion (the 213,139ordinal-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.