Properties of the Number 56540

Fifty-Six Thousand Five Hundred Forty

Basics

Value: 56539 → 56540 → 56541

Parity: even

Prime: No

Previous Prime: 56533

Next Prime: 56543

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 5 × 11 × 257

Divisors: 1, 2, 4, 5, 10, 11, 20, 22, 44, 55

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101110011011100

Octal: 156334

Duodecimal: 28878

Hexadecimal: dcdc

Square: 3196771600

Square Root: 237.7814122255985

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

McKay-Thompson series of class 29A for Monster. A58611

McKay-Thompson series of class 29A for the Monster group with a(0) = 2. A136570

Array read by descending antidiagonals: T(n,k) is the number of ways to partition n X n X n cube into k noncongruent strict cuboids, n>=5, k>=4. A386903

Start with a(1)=1; for n >= 1, a(n+1)=a(n)+a(k) with k=[n - n-th digit of sqrt(2)]. If k<0 or k=0, then a(k)=0. A133393

a(n) = a(n-1) + a(n - 1 minus the number of terms of a(k) == (mod 6) so far). A60733

G.f. A(x) satisfies: 0 = [xⁿ] (1+x)⁽ⁿ⁺²*(n+3)/2) / A(x) for n>0. A304187

Triangle read by rows : T(n,0) = n+1, T(n,k)=0 if k<0 or if k>n, T(n,k) = k·T(n-1,k) - T(n-1,k-1). A159881

a(1) = 1; to form a(n+1), append a(n)-1, a(n)+1 at the beginning and the end of a(n), respectively. Ignore any leading 0's. A56540