Properties of the Number 55308

Fifty-Five Thousand Three Hundred Eight

Basics

Value: 55307 → 55308 → 55309

Parity: even

Prime: No

Previous Prime: 55291

Next Prime: 55313

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 11 × 419

Divisors: 1, 2, 3, 4, 6, 11, 12, 22, 33, 44

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1101100000001100

Octal: 154014

Duodecimal: 28010

Hexadecimal: d80c

Square: 3058974864

Square Root: 235.17652944118382

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

Let f(z) = z² + c, then row k lists the expansion of the n-fold composition f(f(...f(0)...)) in rising powers of c. A137560

Number T(n,k) of binary search trees of height k having n internal nodes; triangle T(n,k), k>=0, k<=n<=2^k-1, read by columns. A335920

Number of binary search trees (BST) on n nodes which have the same height as the optimal BST. A328349

a(n) is the number of isosceles trapezoids in a triangular grid of side length n. A389363

Triangle by rows, related to the numbers of binary trees of height less than n, derived from the Mandelbrot set. A202019

Triangle read by rows: T(n,k) is the number of bargraphs of semiperimeter n having width k (n>=2, k>=1). A271942

Numbers k such that k and k+1 have the same sum of squarefree divisors, or sqf(k) = sqf(k+1), where sqf(k) = A048250(k). A63964

Numbers k such that abs(A328258(k)) = abs(A328258(k+1)). A348586

Number k such that A033634(k) = A033634(k+1). A349224

a(n) = 1·8ⁿ + 2·7ⁿ + 3·6ⁿ + 4·5ⁿ + 5·4ⁿ + 6·3ⁿ + 7·2ⁿ + 8·1ⁿ. A254146