Live analysis

5,491

5,491 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.).

5,491 (five thousand four hundred ninety-one) is an odd 4-digit number. It is a composite number with 6 divisors, and factors as 17² × 19. Written other ways, in hexadecimal, 0x1573.

Centered Triangular Cube-Free Deficient Number Evil Number Harshad / Niven Recamán's Sequence

Interestingness

★ ★ ☆ ☆ ☆

4 notable facts · grade D

5,479 5,480 5,481 5,482 5,483 5,484 5,485 5,486 5,487 5,488 5,489 5,490 5,491 5,492 5,493 5,494 5,495 5,496 5,497 5,498 5,499 5,500 5,501 5,502 5,503

less more

Properties

Parity: Odd
Digit count: 4
Digit sum: 19
Digit product: 180
Digital root: 1
Palindrome: No
Bit width: 13 bits
Reversed: 1,945
Recamán's sequence: a(2,726) = 5,491
Square (n²): 30,151,081
Cube (n³): 165,559,585,771
Divisor count: 6
σ(n) — sum of divisors: 6,140
φ(n) — Euler's totient: 4,896
Sum of prime factors: 53

Primality

Prime factorization: 17 ² × 19

Nearest primes: 5,483 (−8) · 5,501 (+10)

Divisors & multiples

All divisors (6)

1 · 17 · 19 · 289 · 323 · 5491

Aliquot sum (sum of proper divisors): 649

Factor pairs (a × b = 5,491)

1 × 5491

17 × 323

19 × 289

First multiples

5,491 · 10,982 (double) · 16,473 · 21,964 · 27,455 · 32,946 · 38,437 · 43,928 · 49,419 · 54,910

Sums & aliquot sequence

As consecutive integers: 2,745 + 2,746 315 + 316 + … + 331 280 + 281 + … + 298 145 + 146 + … + 178

Aliquot sequence: 5,491 → 649 → 71 → 1 → 0 — terminates at zero

Continued fraction of √n

√5,491 = [74; (9, 1, 6, 1, 9, 148)]

Period length 6 — the block in parentheses repeats forever.

Representations

In words: five thousand four hundred ninety-one
Ordinal: 5491st
Binary: 1010101110011
Octal: 12563
Hexadecimal: 0x1573
Base64: FXM=
One's complement: 60,044 (16-bit)
Scientific notation: 5.491 × 10³
As a duration: 5,491 s = 1 hour, 31 minutes, 31 seconds

In other bases

ternary (3) 21112101

quaternary (4) 1111303

quinary (5) 133431

senary (6) 41231

septenary (7) 22003

nonary (9) 7471

undecimal (11) 4142

duodecimal (12) 3217

tridecimal (13) 2665

tetradecimal (14) 2003

pentadecimal (15) 1961

As an angle

5,491° = 15 × 360° + 91°

91° ≈ 1.588 rad

Compass bearing: E (east)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒁹 𒌋𒌋𒌋𒁹 𒌋𒌋𒌋𒁹
Egyptian hieroglyphic: 𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺
Greek (Milesian): ͵ευϟαʹ
Mayan (base 20): 𝋭·𝋮·𝋫
Chinese: 五千四百九十一
Chinese (financial): 伍仟肆佰玖拾壹

In other modern scripts

Eastern Arabic ٥٤٩١ Devanagari ५४९१ Bengali ৫৪৯১ Tamil ௫௪௯௧ Thai ๕๔๙๑ Tibetan ༥༤༩༡ Khmer ៥៤៩១ Lao ໕໔໙໑ Burmese ၅၄၉၁

Digit at this position in famous constants

π — Pi (π): Digit 5,491 = 0
e — Euler's number (e): Digit 5,491 = 0
φ — Golden ratio (φ): Digit 5,491 = 1
√2 — Pythagoras's (√2): Digit 5,491 = 0
ln 2 — Natural log of 2: Digit 5,491 = 7
γ — Euler-Mascheroni (γ): Digit 5,491 = 0

Also seen as

Unicode codepoint

ᕳ

Canadian Syllabics Tya

U+1573

Other letter (Lo)

UTF-8 encoding: E1 95 B3 (3 bytes).

Lookup U+1573 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#001573

RGB(0, 21, 115)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.21.115.

Address: 0.0.21.115
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.21.115

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

Musical pitch

Heard as a frequency, 5,491 Hz is closest to:

Concert pitch (A4 = 440 Hz): F8 (5587.7 Hz, -30¢)
Scientific pitch (C4 = 256 Hz): F8 (5467.5 Hz, +7¢)
Baroque pitch (A4 = 415 Hz): F♯8 (5583.6 Hz, -29¢)

Position in π

The digit sequence 5491 first appears in π at position 13,619 of the decimal expansion (the 13,619ordinal-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 5491 on Pi Search ↗