Properties of the Number 26556

Twenty-Six Thousand Five Hundred Fifty-Six

Basics

Value: 26555 → 26556 → 26557

Parity: even

Prime: No

Previous Prime: 26539

Next Prime: 26557

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 2213

Divisors: 1, 2, 3, 4, 6, 12, 2213, 4426, 6639, 8852

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110011110111100

Octal: 63674

Duodecimal: 13450

Hexadecimal: 67bc

Square: 705221136

Square Root: 162.96011782028143

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 polyiamonds with n cells that tile the plane. A71332

Place a point on the integer coordinates, up to |n|, along all four axial directions on a Cartesian plane, and then join an infinite straight line between every pair of points: a(n) is the number of finite edges created in the resulting graph. A386561

Expansion of 1/(∑_i>=0 q^2·i*(i+1)/∏_j=0..i (1 - q^2·j+1)²). A294599

Expansion of ((1 + 16·x)/(1 - 16·x))^1/16. A304915

a(n) = T(n, n-3), T given by A026552. Also a(n) = number of integer strings s(0), ..., s(n) counted by T, such that s(n) = 3. A26556

Irregular triangle by rows derived from variants of Cartan matrices: 1's in the super and subdiagonals and 3,4,4,4,... in the main diagonal alternating with 4,4,4,... A180062

Number of (n+2) X (7+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 3 5 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 3 5 6 or 7. A252383

Number of nX4 0..1 arrays with no element equal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards. A279130