Properties of the Number 71961

Seventy-One Thousand Nine Hundred Sixty-One

Basics

Value: 71960 → 71961 → 71962

Parity: odd

Prime: No

Previous Prime: 71947

Next Prime: 71963

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 17 ² × 83

Divisors: 1, 3, 17, 51, 83, 249, 289, 867, 1411, 4233

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001100100011001

Octal: 214431

Duodecimal: 35789

Hexadecimal: 11919

Square: 5178385521

Square Root: 268.2554752470115

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 5 X n arrays of the minimum value of corresponding elements and their horizontal or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..1 5 X n array. A220035

a(n) = ∑_i=0..n T(i,n-i), array T as in A049735. A49736

a(n) = ∑_i=0..n K(n, i) where K(x, y) is the Kronecker symbol (x / y). A71961