Properties of the Number 55609

Fifty-Five Thousand Six Hundred Nine

Basics

Value: 55608 → 55609 → 55610

Parity: odd

Prime: Yes

Previous Prime: 55603

Next Prime: 55619

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 55609

Divisors: 1, 55609

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101100100111001

Octal: 154471

Duodecimal: 28221

Hexadecimal: d939

Square: 3092360881

Square Root: 235.8156059297179

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

Denominators of lower primes-only best approximates (POBAs) to sqrt(2); see Comments. A265773

Denominators of primes-only best approximates (POBAs) to sqrt(2); see Comments. A265777

a(n)/A002939(n+1) is the Kirchhoff index of the join of the disjoint union of two complete graphs on n vertices with the empty graph on n+1 vertices. A338109

Value of prime number D for incrementally largest values of minimal·satisfying the equation x² - D·y² = 3. A336794

Value of prime number D for incrementally largest values of minimal y satisfying the equation x² - D·y² = 3. A336796

A proximate-prime polynomial sequence generated by 2·n² - 2·n + 53089. A155557

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 483", based on the 5-celled von Neumann neighborhood. A267829

Primes having only {0, 5, 6, 9} as digits. A386078

Least positive integer k <= n such that 2^k + (n - k) is prime, or 0 if such an integer k does not exist. A231557

Number of 3 X n binary matrices with no zero rows or columns, up to row and column permutation. A55609