Number

5,591

5,591 is a prime, odd.

5,591 (five thousand five hundred ninety-one) is an odd 4-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0x15D7.

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

Interestingness

★ ★ ★ ☆ ☆

5 notable facts · grade C

5,579 5,580 5,581 5,582 5,583 5,584 5,585 5,586 5,587 5,588 5,589 5,590 5,591 5,592 5,593 5,594 5,595 5,596 5,597 5,598 5,599 5,600 5,601 5,602 5,603

less more

Properties

Parity: Odd
Digit count: 4
Digit sum: 20
Digit product: 225
Digital root: 2
Palindrome: No
Bit width: 13 bits
Reversed: 1,955
Recamán's sequence: a(3,430) = 5,591
Square (n²): 31,259,281
Cube (n³): 174,770,640,071
Divisor count: 2
σ(n) — sum of divisors: 5,592
φ(n) — Euler's totient: 5,590

Primality

5,591 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)

1 · 5591

Aliquot sum (sum of proper divisors): 1

Factor pairs (a × b = 5,591)

1 × 5591

First multiples

5,591 · 11,182 (double) · 16,773 · 22,364 · 27,955 · 33,546 · 39,137 · 44,728 · 50,319 · 55,910

Sums & aliquot sequence

As consecutive integers: 2,795 + 2,796

Continued fraction of √n

√5,591 = [74; (1, 3, 2, 2, 7, 2, 6, 29, 1, 3, 13, 2, 1, 10, 1, 4, 1, 5, 6, 1, 1, 1, 2, 14, …)]

Representations

In words: five thousand five hundred ninety-one
Ordinal: 5591st
Binary: 1010111010111
Octal: 12727
Hexadecimal: 0x15D7
Base64: Fdc=
One's complement: 59,944 (16-bit)
Scientific notation: 5.591 × 10³
As a duration: 5,591 s = 1 hour, 33 minutes, 11 seconds

In other bases

ternary (3) 21200002

quaternary (4) 1113113

quinary (5) 134331

senary (6) 41515

septenary (7) 22205

nonary (9) 7602

undecimal (11) 4223

duodecimal (12) 329b

tridecimal (13) 2711

tetradecimal (14) 2075

pentadecimal (15) 19cb

As an angle

5,591° = 15 × 360° + 191°

191° ≈ 3.334 rad

Compass bearing: S (south)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒁹 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒁹
Egyptian hieroglyphic: 𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺
Greek (Milesian): ͵εφϟαʹ
Mayan (base 20): 𝋭·𝋳·𝋫
Chinese: 五千五百九十一
Chinese (financial): 伍仟伍佰玖拾壹

In other modern scripts

Eastern Arabic ٥٥٩١ Devanagari ५५९१ Bengali ৫৫৯১ Tamil ௫௫௯௧ Thai ๕๕๙๑ Tibetan ༥༥༩༡ Khmer ៥៥៩១ Lao ໕໕໙໑ Burmese ၅၅၉၁

Digit at this position in famous constants

π — Pi (π): Digit 5,591 = 9
e — Euler's number (e): Digit 5,591 = 0
φ — Golden ratio (φ): Digit 5,591 = 5
√2 — Pythagoras's (√2): Digit 5,591 = 6
ln 2 — Natural log of 2: Digit 5,591 = 1
γ — Euler-Mascheroni (γ): Digit 5,591 = 9

Also seen as

Prime neighborhood

Adjacent primes:

Previous prime: 5,581 (gap of 10)
Next prime: 5,623 (gap of 32)

Unicode codepoint

ᗗ

Canadian Syllabics Carrier Hwo

U+15D7

Other letter (Lo)

UTF-8 encoding: E1 97 97 (3 bytes).

Lookup U+15D7 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#0015D7

RGB(0, 21, 215)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.21.215.

Address: 0.0.21.215
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.21.215

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

Musical pitch

Heard as a frequency, 5,591 Hz is closest to:

Concert pitch (A4 = 440 Hz): F8 (5587.7 Hz, +1¢)
Scientific pitch (C4 = 256 Hz): F8 (5467.5 Hz, +39¢)
Baroque pitch (A4 = 415 Hz): F♯8 (5583.6 Hz, +2¢)

Position in π

The digit sequence 5591 first appears in π at position 11,168 of the decimal expansion (the 11,168ordinal-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 5591 on Pi Search ↗