Properties of the Number 54187

Fifty-Four Thousand One Hundred Eighty-Seven

Basics

Value: 54186 → 54187 → 54188

Parity: odd

Prime: No

Previous Prime: 54181

Next Prime: 54193

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 7 × 7741

Divisors: 1, 7, 7741, 54187

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: 1101001110101011

Octal: 151653

Duodecimal: 27437

Hexadecimal: d3ab

Square: 2936230969

Square Root: 232.78101297141913

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) = ∑_k=1..n k²*τ(k), where τ is A000005. A319085

Row sums of a triangle related to the Jacobsthal polynomials. A108742

Triangle read by rows: T(n,k) is the number of deco polyominoes of height n having k cells in the second column (n>=1, k>=0). A deco polyomino is a directed column-convex polyomino in which the height, measured along the diagonal, is attained only in the last column. A121581

The (1,4)-entry in the matrix Mⁿ, where M is the 4 X 4 matrix {{0, -1, -1, 1}, {1, -1, 0, 0}, {0, 1, 1, 0}, {0, 0, 1, 1 }}. A122789

Number of 7 X n matrices with entries {0,1} without adjacent 0's in any row or column. 7th row of A089934. A89938

Number of n X 7 binary arrays with top left value 1 and no two 1's adjacent horizontally or vertically. A228389

Number of positive integers <= 2ⁿ of form 7 x² + 8 y². A54187