Properties of the Number 61750

Sixty-One Thousand Seven Hundred Fifty

Basics

Value: 61749 → 61750 → 61751

Parity: even

Prime: No

Previous Prime: 61729

Next Prime: 61751

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 5 ³ × 13 × 19

Divisors: 1, 2, 5, 10, 13, 19, 25, 26, 38, 50

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1111000100110110

Octal: 170466

Duodecimal: 2B89A

Hexadecimal: f136

Square: 3813062500

Square Root: 248.49547279578354

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

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the upper median minus the lower median of every 2X2 subblock equal. A236875

Number of primitive (aperiodic, or Lyndon) necklaces with n beads of unlabeled colors such that the numbers of beads per color are distinct. A261599

Numbers n such that A083722(n) > 1 and A083722(n) occurs earlier in A083722. A293894

Row sums of triangle A156070. A188538

a(n) = n*(n+1)*(n²-2·n+2)/2. A101375

a(n) = (7·n+2)*(7·n+5) = 49·n² + 49·n + 10. A177060

Number of (n+1)X(3+1) 0..2 arrays with the maximum plus the upper median minus the lower median of every 2X2 subblock equal. A236870

Number of (not necessarily maximal) cliques in the n X n queen graph. A295903

Number of (n+1)X(n+1) 0..2 arrays with the maximum plus the upper median minus the lower median of every 2X2 subblock equal. A236867

a(0) = 0; a(n) is obtained by incrementing each digit of a(n-1) by 9. A61750