Properties of the Number 55209

Fifty-Five Thousand Two Hundred Nine

Basics

Value: 55208 → 55209 → 55210

Parity: odd

Prime: No

Previous Prime: 55207

Next Prime: 55213

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 × 11 × 239

Divisors: 1, 3, 7, 11, 21, 33, 77, 231, 239, 717

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101011110101001

Octal: 153651

Duodecimal: 27B49

Hexadecimal: d7a9

Square: 3048033681

Square Root: 234.9659549807163

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 4-cycles in the n-triangular honeycomb queen graph. A289705

Schroeder pseudoprimes: Composites k that divide the k-th Schroeder number A001003(k-1). A75764

a(n) = (10n+1)*(10n+9). A1535

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 427", based on the 5-celled von Neumann neighborhood. A271904

a(n) = ∏_i=0..n i!². A55209