Properties of the Number 18559

Eighteen Thousand Five Hundred Fifty-Nine

Basics

Value: 18558 → 18559 → 18560

Parity: odd

Prime: No

Previous Prime: 18553

Next Prime: 18583

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 67 × 277

Divisors: 1, 67, 277, 18559

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100100001111111

Octal: 44177

Duodecimal: A8A7

Hexadecimal: 487f

Square: 344436481

Square Root: 136.23142075160195

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 integer partitions of n whose negated run-lengths are unimodal. A332638

a(n) = s(1)*t(n) + s(2)*t(n-1) + ... + s(k)*t(n+1-k), where k = floor((n+1)/2), s = (natural numbers >= 3), t = A023531. A24313

List of different composites in Pascal-like triangles with index of asymmetry y = 2 and index of obliquity z = 0 or z = 1. A141066

Expansion of 1/((1-x)*(1-x-x³)). A77868

a(n) = number of segments (edges) in the configuration A290447(n). A290866

Number of partitions of n such that (greatest part) + (least part) < number of parts. A237822

Pisot sequence T(3,5). A20745

Fibonacci iteration starting with (1, a(n)) leads to a "nine digits anagram". A34587

a(n) = ∑_{k=0..floor(n/3)} C(n-2k,k-1). A99560

a(n) equals the least sum of the squares of the coefficients in (1 + 2·x^k + x^p + x^q)ⁿ found at sufficiently large p and q>(n+1)p for some fixed k>0. A186377