Number

56,009

56,009 is a prime, odd.

56,009 (fifty-six thousand nine) is an odd 5-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0xDAC9.

Arithmetic Number Chen Prime Cube-Free Deficient Number Odious Number Prime Pythagorean Prime Recamán's Sequence Sexy Prime Sophie Germain Prime Squarefree

Interestingness

★ ★ ★ ★ ★

9 notable facts · grade A

55,997 55,998 55,999 56,000 56,001 56,002 56,003 56,004 56,005 56,006 56,007 56,008 56,009 56,010 56,011 56,012 56,013 56,014 56,015 56,016 56,017 56,018 56,019 56,020 56,021

less more

Properties

Parity: Odd
Digit count: 5
Digit sum: 20
Digit product: 0
Digital root: 2
Palindrome: No
Bit width: 16 bits
Reversed: 90,065
Recamán's sequence: a(291,802) = 56,009
Square (n²): 3,137,008,081
Cube (n³): 175,700,685,608,729
Divisor count: 2
σ(n) — sum of divisors: 56,010
φ(n) — Euler's totient: 56,008

Primality

56,009 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)

1 · 56009

Aliquot sum (sum of proper divisors): 1

Factor pairs (a × b = 56,009)

1 × 56009

First multiples

56,009 · 112,018 (double) · 168,027 · 224,036 · 280,045 · 336,054 · 392,063 · 448,072 · 504,081 · 560,090

Sums & aliquot sequence

As a sum of two squares: 28² + 235²

As consecutive integers: 28,004 + 28,005

Continued fraction of √n

√56,009 = [236; (1, 1, 1, 24, 4, 13, 3, 1, 1, 1, 1, 1, 5, 3, 2, 1, 1, 1, 2, 67, 4, 4, 1, 2, …)]

Representations

In words: fifty-six thousand nine
Ordinal: 56009th
Binary: 1101101011001001
Octal: 155311
Hexadecimal: 0xDAC9
Base64: 2sk=
One's complement: 9,526 (16-bit)
Scientific notation: 5.6009 × 10⁴
As a duration: 56,009 s = 15 hours, 33 minutes, 29 seconds

In other bases

ternary (3) 2211211102

quaternary (4) 31223021

quinary (5) 3243014

senary (6) 1111145

septenary (7) 322202

nonary (9) 84742

undecimal (11) 39098

duodecimal (12) 284b5

tridecimal (13) 1c655

tetradecimal (14) 165a9

pentadecimal (15) 118de

As an angle

56,009° = 155 × 360° + 209°

209° ≈ 3.648 rad

Compass bearing: SSW (south-southwest)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): ͵νϛθʹ
Mayan (base 20): 𝋧·𝋠·𝋠·𝋩
Chinese: 五萬六千零九
Chinese (financial): 伍萬陸仟零玖

In other modern scripts

Eastern Arabic ٥٦٠٠٩ Devanagari ५६००९ Bengali ৫৬০০৯ Tamil ௫௬௦௦௯ Thai ๕๖๐๐๙ Tibetan ༥༦༠༠༩ Khmer ៥៦០០៩ Lao ໕໖໐໐໙ Burmese ၅၆၀၀၉

Digit at this position in famous constants

π — Pi (π): Digit 56,009 = 2
e — Euler's number (e): Digit 56,009 = 8
φ — Golden ratio (φ): Digit 56,009 = 6
√2 — Pythagoras's (√2): Digit 56,009 = 8
ln 2 — Natural log of 2: Digit 56,009 = 8
γ — Euler-Mascheroni (γ): Digit 56,009 = 5

Also seen as

Prime neighborhood

Adjacent primes:

Previous prime: 56,003 (gap of 6)
Next prime: 56,039 (gap of 30)

Pair status: sexy with 56003.

Hex color

#00DAC9

RGB(0, 218, 201)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.218.201.

Address: 0.0.218.201
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.218.201

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Position in π

The digit sequence 56009 first appears in π at position 367,342 of the decimal expansion (the 367,342ordinal-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.

Look up 56009 on Pi Search ↗