Properties of the Number 61871

Sixty-One Thousand Eight Hundred Seventy-One

Basics

Value: 61870 → 61871 → 61872

Parity: odd

Prime: Yes

Previous Prime: 61861

Next Prime: 61879

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 61871

Divisors: 1, 61871

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1111000110101111

Octal: 170657

Duodecimal: 2B97B

Hexadecimal: f1af

Square: 3828020641

Square Root: 248.73881884418444

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

Numbers whose least quadratic nonresidue (A020649) is 19. A25027

The point at which the powers of n merge on an 8-digit calculator. A216069

a(n) is the least number that can be written in exactly n ways as p·q + q·r + p·r where (p,q,r) is an unordered triple of distinct primes. A356457

Number of rooted ordered trees with node weights summing to n, where the root has weight 0, non-root node weights are in {1,2,3}, and no nodes have the same weight as their parent node. A382096

Number of broken 3-diamond partitions of n. A328541

|First digit - second digit + third digit - fourth digit ...| = 2. A61871