Properties of the Number 5566

Five Thousand Five Hundred Sixty-Six

Basics

Value: 5565 → 5566 → 5567

Parity: even

Prime: No

Previous Prime: 5563

Next Prime: 5569

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 11 ² × 23

Divisors: 1, 2, 11, 22, 23, 46, 121, 242, 253, 506

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010110111110

Octal: 12676

Duodecimal: 327A

Hexadecimal: 15be

Square: 30980356

Square Root: 74.60562981437795

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

Pentagonal pyramidal numbers: a(n) = n²*(n+1)/2. A2411

Generalized 26-gonal (or icosihexagonal) numbers: m*(12·m - 11) with m = 0, +1, -1, +2, -2, +3, -3, ... A316724

Number of different hierarchical orderings that can be formed from n unlabeled elements with no repetition of subhierarchies. A98407

a(n) = 1 + ∑_i=1..n (n-i+1)*φ(i). A5598

Numbers m such that there are precisely 16 groups of order m. A295161

Numbers which have only digits 5 and 6 in base 10. A256291

a(n) = (9·n² + 3·n + 2)/2. A38764

Numbers k such that k!!!!! + 1 is prime. A85148

a(n) = (1/2)*floor(n/2)*floor((n-1)/2)*floor((n-2)/2). A28724

Multiples of 11 whose digit sum is a multiple of 11. A216995