Properties of the Number 81447

Eighty-One Thousand Four Hundred Forty-Seven

Basics

Value: 81446 → 81447 → 81448

Parity: odd

Prime: No

Previous Prime: 81439

Next Prime: 81457

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 17 × 1597

Divisors: 1, 3, 17, 51, 1597, 4791, 27149, 81447

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10011111000100111

Octal: 237047

Duodecimal: 3B173

Hexadecimal: 13e27

Square: 6633613809

Square Root: 285.3892079248968

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) = n*(4·n²+5·n-3)/2. A126335

a(1) = 1; if a(n) is not divisible by 3, a(n+1) = 4·a(n) + 1, otherwise a(n+1) = a(n)/3. A346035

Smallest squares such that partial sums of the sequence plus 5 are primes. A81447