Properties of the Number 27181

Twenty-Seven Thousand One Hundred Eighty-One

Basics

Value: 27180 → 27181 → 27182

Parity: odd

Prime: No

Previous Prime: 27179

Next Prime: 27191

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 7 × 11 × 353

Divisors: 1, 7, 11, 77, 353, 2471, 3883, 27181

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110101000101101

Octal: 65055

Duodecimal: 13891

Hexadecimal: 6a2d

Square: 738806761

Square Root: 164.8666127510358

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Number of primes of the form x⁸ + 1 less than 10ⁿ. A214454

Numbers with three distinct prime factors which when concatenated in any order form prime numbers. A180679

Numbers with three distinct prime factors (each of which may or may not be repeated) which when concatenated in any order form a prime number. A181559

Numbers with 3 or more prime factors (with multiplicity) such that every concatenation of their prime factors is prime. A217264

Let S be the binary string consisting of the first n digits of (100101)*; a(n) = number of ways of writing S as a product of palindromes. A215255

G.f.: [ ∑_n>=0 (4·n)!/(n!)⁴ * x^4·n/(1-x)^4·n+4 ]^1/4. A262012

a(n) = ∑_{k = 0..n} C(n,k)⁵. A5261

a(n) = Lucas(n+4) - 2*(n+3). A27181

G.f. A(x) satisfies: A(x)⁴ = ∑_n>=0 (4·n)!/(n!)⁴ * xⁿ / A(x)^4·n. A262013

Consecutive states of the linear congruential pseudo-random number generator for Smalltalk-80 when started at 1. A384220