Properties of the Number 58121

Fifty-Eight Thousand One Hundred Twenty-One

Basics

Value: 58120 → 58121 → 58122

Parity: odd

Prime: No

Previous Prime: 58111

Next Prime: 58129

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 7 × 19 ² × 23

Divisors: 1, 7, 19, 23, 133, 161, 361, 437, 2527, 3059

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1110001100001001

Octal: 161411

Duodecimal: 29775

Hexadecimal: e309

Square: 3378050641

Square Root: 241.08297326854088

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

a(n)=(1/(4n))*sum(k=1,n,F(6k)*B(2n-2k)*binomial(2n,2k)) where F=Fibonacci numbers and B=Bernoulli numbers. A124125

G.f.: (1+44·x+339·x²+630·x³+323·x⁴+42·x⁵+x⁶)/(1-x)⁷. A160835

Numbers k such that replacing each digit d in the decimal expansion of k with d³ yields a prime each time, when done recursively three times. A316982

Positive integers with binary expansion (b(1), ..., b(m)) such that ∑_{i = 1..m-k} b(i)*b(i+k) is odd for all k = 0..m-1. A360388

Number of self-converse semigroups of order n with 3 idempotents. A58121