Properties of the Number 55987

Fifty-Five Thousand Nine Hundred Eighty-Seven

Basics

Value: 55986 → 55987 → 55988

Parity: odd

Prime: Yes

Previous Prime: 55967

Next Prime: 55997

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 55987

Divisors: 1, 55987

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101101010110011

Octal: 155263

Duodecimal: 28497

Hexadecimal: dab3

Square: 3134544169

Square Root: 236.61572221642416

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) = (6ⁿ - 1)/5. A3464

Where records occur in A079366. A79368

Triangle T(n, k, m) = (m*(n-k) + 1)*T(n-1, k-1, m) + (m·k + 1)*T(n-1, k, m) - m·k*(n-k)*T(n-2, k-1, m) with T(n, 0, m) = T(n, n, m) = 1 and m = 5, read by rows. A157156

a(n) = 1111111 in base n. A53716

Triangle of Gaussian binomial coefficients [ n,k ] for q = 6. A22170

a(n) = ∑_k=0..n n^k. A31973

Triangle read by rows: T(n,k) = value of the n-th repunit in base (k+1) representation, 1<=k<=n. A125118

Primes of the form n⁶ + n⁵ + n⁴ + n³ + n² + n + 1. A88550

Smallest primitive prime factor of 6ⁿ-1. A379639

Primes which can be expressed as sum of distinct powers of 6. A77720