Properties of the Number 47090

Forty-Seven Thousand Ninety

Basics

Value: 47089 → 47090 → 47091

Parity: even

Prime: No

Previous Prime: 47087

Next Prime: 47093

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 5 × 17 × 277

Divisors: 1, 2, 5, 10, 17, 34, 85, 170, 277, 554

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011011111110010

Octal: 133762

Duodecimal: 23302

Hexadecimal: b7f2

Square: 2217468100

Square Root: 217.00230413523263

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

Numbers of the form m² + 1 that can be expressed in more than one way as j² + k² with j > k > 1 and gcd(j,k) = 1. A300166

a(n) = ∑_k=0..n 2^k * binomial(2·n,k) * binomial(2·n-k-1,n-k). A385319

Triangular array: the fission of (p(n,x)) by ((2x+1)ⁿ), where p(n,x)=(x+1)ⁿ. A193856

Mirror of the triangle A193856. A193857

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 237", based on the 5-celled von Neumann neighborhood. A270982

Sum{T(i,n-i): i=0,1,...,n}, array T as in A047089. A47090