Properties of the Number 55406

Fifty-Five Thousand Four Hundred Six

Basics

Value: 55405 → 55406 → 55407

Parity: even

Prime: No

Previous Prime: 55399

Next Prime: 55411

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 13 × 2131

Divisors: 1, 2, 13, 26, 2131, 4262, 27703, 55406

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101100001101110

Octal: 154156

Duodecimal: 28092

Hexadecimal: d86e

Square: 3069824836

Square Root: 235.38479135237264

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

Pisot sequence L(5,8). A20736

Expansion of g.f. ∑_n>=1 qⁿ/(1-q^2·n-q^3·n). A368689

Expansion of (2-x-x²-x³)/((1-x)*(1-x²-x³)). A52954

Expansion of (1-x)^-1/(1-x²+x³). A77883

a(0) = a(1) = 1; a(n) = ∑_k=0..n-2 lcm(a(k), a(n-k-2)). A318123

a(n)=the sum of the (1,2)- and (1,3)-entries of the matrix Pⁿ + Tⁿ, where the 3 X 3 matrices P and T are defined by P=[0,1,0;0,0,1;1,0,0] and T=[0,1,0;0,0,1;1,1,0]. A109524

Number of points in N⁷ of norm <= n. A55406

9-gonal numbers (A001106) that are the sum of twelve consecutive 9-gonal numbers. A258444