Properties of the Number 51090

Fifty-One Thousand Ninety

Basics

Value: 51089 → 51090 → 51091

Parity: even

Prime: No

Previous Prime: 51071

Next Prime: 51109

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 5 × 13 × 131

Divisors: 1, 2, 3, 5, 6, 10, 13, 15, 26, 30

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1100011110010010

Octal: 143622

Duodecimal: 25696

Hexadecimal: c792

Square: 2610188100

Square Root: 226.03097132915215

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

Integers·such that for some integer y we have uphi(x) = uphi(y) = x-y, where uphi(n) = A047994(n) is the unitary totient function: If n = Product p_i^e_i, uphi(n) = Product (p_i^e_i - 1). A67739

Number of multiples of n which have only distinct and nonzero digits in base 10. A328287

a(n) = ∑_d∣n n^τ(d). A345271

Number of binary partitions of n into three kinds of parts. A373309

Numbers k such that ∑_{d divides k} σ(d)/φ(d) is an integer. A68991

Primes p such that x⁴² = -2 has a solution mod p. A51090