Live analysis

22,001

22,001 is a composite number, odd.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).

22,001 (twenty-two thousand one) is an odd 5-digit number. It is a composite number with 6 divisors, and factors as 7² × 449. Written other ways, in hexadecimal, 0x55F1.

Arithmetic Number Cube-Free Deficient Number Odious Number Recamán's Sequence

Interestingness

★ ☆ ☆ ☆ ☆

3 notable facts · grade F

21,989 21,990 21,991 21,992 21,993 21,994 21,995 21,996 21,997 21,998 21,999 22,000 22,001 22,002 22,003 22,004 22,005 22,006 22,007 22,008 22,009 22,010 22,011 22,012 22,013

less more

Properties

Parity: Odd
Digit count: 5
Digit sum: 5
Digit product: 0
Digital root: 5
Palindrome: No
Bit width: 15 bits
Reversed: 10,022
Recamán's sequence: a(167,761) = 22,001
Square (n²): 484,044,001
Cube (n³): 10,649,452,066,001
Divisor count: 6
σ(n) — sum of divisors: 25,650
φ(n) — Euler's totient: 18,816
Sum of prime factors: 463

Primality

Prime factorization: 7 ² × 449

Nearest primes: 21,997 (−4) · 22,003 (+2)

Divisors & multiples

All divisors (6)

1 · 7 · 49 · 449 · 3143 · 22001

Aliquot sum (sum of proper divisors): 3,649

Factor pairs (a × b = 22,001)

1 × 22001

7 × 3143

49 × 449

First multiples

22,001 · 44,002 (double) · 66,003 · 88,004 · 110,005 · 132,006 · 154,007 · 176,008 · 198,009 · 220,010

Sums & aliquot sequence

As a sum of two squares: 49² + 140²

As consecutive integers: 11,000 + 11,001 3,140 + 3,141 + … + 3,146 1,565 + 1,566 + … + 1,578 425 + 426 + … + 473

Aliquot sequence: 22,001 → 3,649 → 131 → 1 → 0 — terminates at zero

Continued fraction of √n

√22,001 = [148; (3, 18, 4, 1, 4, 4, 2, 2, 1, 12, 5, 3, 5, 1, 2, 1, 6, 2, 58, 1, 6, 2, 3, 4, …)]

Representations

In words: twenty-two thousand one
Ordinal: 22001st
Binary: 101010111110001
Octal: 52761
Hexadecimal: 0x55F1
Base64: VfE=
One's complement: 43,534 (16-bit)
Scientific notation: 2.2001 × 10⁴
As a duration: 22,001 s = 6 hours, 6 minutes, 41 seconds

In other bases

ternary (3) 1010011212

quaternary (4) 11113301

quinary (5) 1201001

senary (6) 245505

septenary (7) 121100

nonary (9) 33155

undecimal (11) 15591

duodecimal (12) 10895

tridecimal (13) a025

tetradecimal (14) 8037

pentadecimal (15) 67bb

As an angle

22,001° = 61 × 360° + 41°

41° ≈ 0.716 rad

Compass bearing: NE (northeast)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
Egyptian hieroglyphic: 𓂍𓂍𓆼𓆼𓏺
Greek (Milesian): ͵κβαʹ
Mayan (base 20): 𝋢·𝋯·𝋠·𝋡
Chinese: 二萬二千零一
Chinese (financial): 貳萬貳仟零壹

In other modern scripts

Eastern Arabic ٢٢٠٠١ Devanagari २२००१ Bengali ২২০০১ Tamil ௨௨௦௦௧ Thai ๒๒๐๐๑ Tibetan ༢༢༠༠༡ Khmer ២២០០១ Lao ໒໒໐໐໑ Burmese ၂၂၀၀၁

Digit at this position in famous constants

π — Pi (π): Digit 22,001 = 7
e — Euler's number (e): Digit 22,001 = 5
φ — Golden ratio (φ): Digit 22,001 = 8
√2 — Pythagoras's (√2): Digit 22,001 = 2
ln 2 — Natural log of 2: Digit 22,001 = 4
γ — Euler-Mascheroni (γ): Digit 22,001 = 8

Also seen as

Unicode codepoint

嗱

CJK Unified Ideograph-55F1

U+55F1

Other letter (Lo)

UTF-8 encoding: E5 97 B1 (3 bytes).

Lookup U+55F1 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#0055F1

RGB(0, 85, 241)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.85.241.

Address: 0.0.85.241
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.85.241

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

Position in π

The digit sequence 22001 first appears in π at position 154,980 of the decimal expansion (the 154,980ordinal-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.

Look up 22001 on Pi Search ↗