Number

4,481

4,481 is a prime, odd.

4,481 (four thousand four hundred eighty-one) is an odd 4-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0x1181.

Arithmetic Number Chen Prime Cube-Free Deficient Number Evil Number Happy Number Prime Pythagorean Prime Recamán's Sequence Sophie Germain Prime Squarefree Twin Prime

Interestingness

★ ★ ★ ★ ★

10 notable facts · grade A

4,469 4,470 4,471 4,472 4,473 4,474 4,475 4,476 4,477 4,478 4,479 4,480 4,481 4,482 4,483 4,484 4,485 4,486 4,487 4,488 4,489 4,490 4,491 4,492 4,493

less more

Properties

Parity: Odd
Digit count: 4
Digit sum: 17
Digit product: 128
Digital root: 8
Palindrome: No
Bit width: 13 bits
Reversed: 1,844
Recamán's sequence: a(5,778) = 4,481
Square (n²): 20,079,361
Cube (n³): 89,975,616,641
Divisor count: 2
σ(n) — sum of divisors: 4,482
φ(n) — Euler's totient: 4,480

Primality

4,481 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)

1 · 4481

Aliquot sum (sum of proper divisors): 1

Factor pairs (a × b = 4,481)

1 × 4481

First multiples

4,481 · 8,962 (double) · 13,443 · 17,924 · 22,405 · 26,886 · 31,367 · 35,848 · 40,329 · 44,810

Sums & aliquot sequence

As a sum of two squares: 16² + 65²

As consecutive integers: 2,240 + 2,241

Continued fraction of √n

√4,481 = [66; (1, 15, 1, 2, 1, 7, 1, 1, 1, 1, 1, 3, 1, 1, 3, 1, 1, 1, 1, 1, 7, 1, 2, 1, …)]

Period length 27 — the block in parentheses repeats forever.

Representations

In words: four thousand four hundred eighty-one
Ordinal: 4481st
Binary: 1000110000001
Octal: 10601
Hexadecimal: 0x1181
Base64: EYE=
One's complement: 61,054 (16-bit)
Scientific notation: 4.481 × 10³
As a duration: 4,481 s = 1 hour, 14 minutes, 41 seconds

In other bases

ternary (3) 20010222

quaternary (4) 1012001

quinary (5) 120411

senary (6) 32425

septenary (7) 16031

nonary (9) 6128

undecimal (11) 3404

duodecimal (12) 2715

tridecimal (13) 2069

tetradecimal (14) 18c1

pentadecimal (15) 14db

Palindromic in base 8

As an angle

4,481° = 12 × 360° + 161°

161° ≈ 2.81 rad

Compass bearing: SSE (south-southeast)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒁹 𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
Egyptian hieroglyphic: 𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺
Greek (Milesian): ͵δυπαʹ
Mayan (base 20): 𝋫·𝋤·𝋡
Chinese: 四千四百八十一
Chinese (financial): 肆仟肆佰捌拾壹

In other modern scripts

Eastern Arabic ٤٤٨١ Devanagari ४४८१ Bengali ৪৪৮১ Tamil ௪௪௮௧ Thai ๔๔๘๑ Tibetan ༤༤༨༡ Khmer ៤៤៨១ Lao ໔໔໘໑ Burmese ၄၄၈၁

Digit at this position in famous constants

π — Pi (π): Digit 4,481 = 0
e — Euler's number (e): Digit 4,481 = 7
φ — Golden ratio (φ): Digit 4,481 = 1
√2 — Pythagoras's (√2): Digit 4,481 = 3
ln 2 — Natural log of 2: Digit 4,481 = 3
γ — Euler-Mascheroni (γ): Digit 4,481 = 4

Also seen as

Prime neighborhood

Adjacent primes:

Previous prime: 4,463 (gap of 18)
Next prime: 4,483 (gap of 2)

Pair status: twin with 4483.

Unicode codepoint

ᆁ

Hangul Jungseong O-Ye

U+1181

Other letter (Lo)

UTF-8 encoding: E1 86 81 (3 bytes).

Lookup U+1181 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#001181

RGB(0, 17, 129)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.17.129.

Address: 0.0.17.129
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.17.129

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

Musical pitch

Heard as a frequency, 4,481 Hz is closest to:

Concert pitch (A4 = 440 Hz): C♯8 (4434.9 Hz, +18¢)
Scientific pitch (C4 = 256 Hz): D8 (4597.6 Hz, -44¢)
Baroque pitch (A4 = 415 Hz): D8 (4431.7 Hz, +19¢)

Position in π

The digit sequence 4481 first appears in π at position 40,589 of the decimal expansion (the 40,589ordinal-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 4481 on Pi Search ↗