Properties of the Number 47991

Forty-Seven Thousand Nine Hundred Ninety-One

Basics

Value: 47990 → 47991 → 47992

Parity: odd

Prime: No

Previous Prime: 47981

Next Prime: 48017

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 17 × 941

Divisors: 1, 3, 17, 51, 941, 2823, 15997, 47991

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1011101101110111

Octal: 135567

Duodecimal: 23933

Hexadecimal: bb77

Square: 2303136081

Square Root: 219.06848244327617

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) = a(n-1) + a(floor(n/2)) + a(ceiling(n/2)). A131205

Number of partitions of n with rank a multiple of 5. A363237

Numbers whose base-6 representation has exactly 7 runs. A43615

a(n) = A131205(A005578(n)). A152560

Triangle formed from expansion of (x-1)*(x+2)*(x-3)*...*(x+-n). A47991