Properties of the Number 81503

Eighty-One Thousand Five Hundred Three

Basics

Value: 81502 → 81503 → 81504

Parity: odd

Prime: No

Previous Prime: 81463

Next Prime: 81509

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 149 × 547

Divisors: 1, 149, 547, 81503

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10011111001011111

Octal: 237137

Duodecimal: 3B1BB

Hexadecimal: 13e5f

Square: 6642739009

Square Root: 285.48730269488345

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

Number of points that are the intersections of exactly two semicircles in the configuration A290447(n). A292103

Number of ways to write n² as x² + y² + z² + w² with x,y,z,w nonnegative integers and z <= w such that both·and 4·x - 3·y are powers of 4 (including 4⁰ = 1). A300219

Number of ways to write n² as x² + y² + z² + w² with x,y,z,w nonnegative integers and z <= w such that·or y is a power of 4 (including 4⁰ = 1) and x + 3·y is also a power of 4. A299537

Number of ways to write n² as x² + y² + z² + w² with x,y,z,w nonnegative integers and z <= w such that·or y is a power of 2 (including 1) and x + 63·y = 2^2k+1 for some k = 0,1,2,.... A300360

Number of steps to reach a single digit when map in A081502 is iterated. A81503