Properties of the Number 55558

Fifty-Five Thousand Five Hundred Fifty-Eight

Basics

Value: 55557 → 55558 → 55559

Parity: even

Prime: No

Previous Prime: 55547

Next Prime: 55579

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 × 27779

Divisors: 1, 2, 27779, 55558

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101100100000110

Octal: 154406

Duodecimal: 2819A

Hexadecimal: d906

Square: 3086691364

Square Root: 235.70744578820586

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

Expansion of (∏_k>0 theta₃(q^k)/theta₄(q^k))^1/2, where theta₃() and theta₄() are the Jacobi θ functions. A320968

Numbers k with digits 5 and 8 only. A284381

Expansion of ∏_k>0 1/theta₃(q^2·k-1), where theta₃() is the Jacobi θ function. A320098

Numbers having four 5's in base 10. A43512

Numbers n such that 4·10ⁿ + 8·R_n - 1 is prime, where R_n = 11...1 is the repunit (A002275) of length n. A102999

Near-repdigit semiprimes with 5 as repeated digit. A105986

Primes of the form 1999...999. A55558