Properties of the Number 90871

Ninety Thousand Eight Hundred Seventy-One

Basics

Value: 90870 → 90871 → 90872

Parity: odd

Prime: No

Previous Prime: 90863

Next Prime: 90887

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 11 ² × 751

Divisors: 1, 11, 121, 751, 8261, 90871

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110001011110111

Octal: 261367

Duodecimal: 44707

Hexadecimal: 162f7

Square: 8257538641

Square Root: 301.44817133298386

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(1)=1, a(n) = -1 + n*∑_j=1..n-1 a(j). A82425

a(n) = sum of numbers formed using the digits of next n numbers. A81993

Numbers k such that the six numbers 1.prime(k).prime(k+1), prime(k).1.prime(k+1), prime(k).prime(k+1).1, 1.prime(k-1).prime(k), prime(k-1).1.prime(k) and prime(k-1).prime(k).1, where "." denotes concatenation, are primes. A90871