Properties of the Number 15544

Fifteen Thousand Five Hundred Forty-Four

Basics

Value: 15543 → 15544 → 15545

Parity: even

Prime: No

Previous Prime: 15541

Next Prime: 15551

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ³ × 29 × 67

Divisors: 1, 2, 4, 8, 29, 58, 67, 116, 134, 232

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11110010111000

Octal: 36270

Duodecimal: 8BB4

Hexadecimal: 3cb8

Square: 241615936

Square Root: 124.6755790040696

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

Absolute discriminants of complex quadratic fields with 3-class group of elementary abelian type (3,3) of rank 2. A242863

Absolute discriminants of complex quadratic fields with 3-class rank 2. A242862

Number of positions of the 15-puzzle at a distance of n moves from an initial state with the empty square in one of the corners, in the single-tile metric. A89484

Absolute discriminants of complex quadratic fields with 3-class group of type (3,3) and Hilbert 3-class field tower of exact length 3, except for the cases mentioned in the COMMENTS. A242878

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero. A304676

Minimal absolute discriminants a(n) of complex quadratic fields with 3-class group of type (3,3), 3-principalization type E.6 (1122), and second 3-class group G of odd nilpotency class cl(G)=2(n+2)+1. A247692

A Wallis pair (x,y) satisfies σ(x²) = σ(y²); sequence gives x's for indecomposable Wallis pairs with x < y (ordered by values of x). A75768

a(n) = A079137(n)/2. A123936

Parameters n for which the elliptic curve y²=x³-n has rank 4. A179137

a(n) = ∑_i=0..n digsum(i)³, where digsum(i) = A007953(i). A231688