Properties of the Number 22556

Twenty-Two Thousand Five Hundred Fifty-Six

Basics

Value: 22555 → 22556 → 22557

Parity: even

Prime: No

Previous Prime: 22549

Next Prime: 22567

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 5639

Divisors: 1, 2, 4, 5639, 11278, 22556

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101100000011100

Octal: 54034

Duodecimal: 11078

Hexadecimal: 581c

Square: 508773136

Square Root: 150.18655066283398

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

p-INVERT of (1,1,0,0,0,0,...), where p(S) = 1 - 2 S - S². A291382

Triangle read by rows: T(n,k) is the number of n edge non-orientable genus k maps. A380235

a(n) = number of non-orientable genus 5 maps with n edges. A348806

Number of integer partitions of n whose LCM is a multiple of n. A327778

a(n) = coefficient of xⁿ*yⁿ in ∏_n>=1 (1 - (xⁿ + yⁿ)). A322213

Numbers k such that w(k), w(k+1), and w(k+2) are all odd, where w is A336957. A337644

a(0)=-5, a(1)=6; thereafter a(n) = 2·a(n-1) + a(n-2). A221175

Integers k > 10577 such that the 'Reverse and Add!' trajectory of k joins the trajectory of 10577. A63434

Number of integers in n-th generation of tree T(2^-1/2) defined in Comments. A274156

a(n) is the number of smallest parts in the overpartitions of n having even smallest part. A335728