Properties of the Number 81997

Eighty-One Thousand Nine Hundred Ninety-Seven

Basics

Value: 81996 → 81997 → 81998

Parity: odd

Prime: No

Previous Prime: 81973

Next Prime: 82003

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 167 × 491

Divisors: 1, 167, 491, 81997

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100000001001101

Octal: 240115

Duodecimal: 3B551

Hexadecimal: 1404d

Square: 6723508009

Square Root: 286.3511829903973

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 trinomial transform of Fibonacci(3n). A91870

Triangle read by rows: T(n,k) = 4·T(n-1,k-1) + T(n,k-1) with T(2·m,0) = 0 and T(2·m+1,0) = 5^m. A292466

Numbers k such that prime(k+1)^prime(k+3) == prime(k) mod prime(k+2). A335571

Row sums in triangle A081994. A81997