Number

7,481

7,481 is a prime, odd.

Arithmetic Number Chen Prime Cousin Prime Deficient Number Emirp Evil Number Happy Number Prime Pythagorean Prime Recamán's Sequence Sexy Prime Squarefree

Properties

Parity: Odd
Digit count: 4
Digit sum: 20
Digit product: 224
Digital root: 2
Palindrome: No
Bit width: 13 bits
Reversed: 1,847
Recamán's sequence: a(11,065) = 7,481
Square (n²): 55,965,361
Cube (n³): 418,676,865,641
Divisor count: 2
σ(n) — sum of divisors: 7,482
φ(n) — Euler's totient: 7,480

Primality

7,481 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)

1 · 7481

Aliquot sum (sum of proper divisors): 1

Factor pairs (a × b = 7,481)

1 × 7481

First multiples

7,481 · 14,962 (double) · 22,443 · 29,924 · 37,405 · 44,886 · 52,367 · 59,848 · 67,329 · 74,810

Sums & aliquot sequence

As a sum of two squares: 16² + 85²

As consecutive integers: 3,740 + 3,741

Representations

In words: seven thousand four hundred eighty-one
Ordinal: 7481st
Binary: 1110100111001
Octal: 16471
Hexadecimal: 0x1D39
Base64: HTk=
One's complement: 58,054 (16-bit)

In other bases

ternary (3) 101021002

quaternary (4) 1310321

quinary (5) 214411

senary (6) 54345

septenary (7) 30545

nonary (9) 11232

undecimal (11) 5691

duodecimal (12) 43b5

tridecimal (13) 3536

tetradecimal (14) 2a25

pentadecimal (15) 233b

Historical numeral systems

Babylonian (base 60): 𒁹𒁹 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
Egyptian hieroglyphic: 𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺
Greek (Milesian): ͵ζυπαʹ
Mayan (base 20): 𝋲·𝋮·𝋡
Chinese: 七千四百八十一
Chinese (financial): 柒仟肆佰捌拾壹

In other modern scripts

Eastern Arabic ٧٤٨١ Devanagari ७४८१ Bengali ৭৪৮১ Tamil ௭௪௮௧ Thai ๗๔๘๑ Tibetan ༧༤༨༡ Khmer ៧៤៨១ Lao ໗໔໘໑ Burmese ၇၄၈၁

Digit at this position in famous constants

π — Pi (π): Digit 7,481 = 4
e — Euler's number (e): Digit 7,481 = 5
φ — Golden ratio (φ): Digit 7,481 = 0
√2 — Pythagoras's (√2): Digit 7,481 = 3
ln 2 — Natural log of 2: Digit 7,481 = 0
γ — Euler-Mascheroni (γ): Digit 7,481 = 3

Also seen as

Prime neighborhood

Adjacent primes:

Previous prime: 7,477 (gap of 4)
Next prime: 7,487 (gap of 6)

Pair status: cousin with 7477, sexy with 7487.

Unicode codepoint

ᴹ

Modifier Letter Capital M

U+1D39

Modifier letter (Lm)

UTF-8 encoding: E1 B4 B9 (3 bytes).

Lookup U+1D39 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#001D39

RGB(0, 29, 57)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.29.57.

Address: 0.0.29.57
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.29.57

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

Position in π

The digit sequence 7481 first appears in π at position 584 of the decimal expansion (the 584ordinal-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 7481 on Pi Search ↗