Properties of the Number 75145

Seventy-Five Thousand One Hundred Forty-Five

Basics

Value: 75144 → 75145 → 75146

Parity: odd

Prime: No

Previous Prime: 75133

Next Prime: 75149

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 × 7 × 19 × 113

Divisors: 1, 5, 7, 19, 35, 95, 113, 133, 565, 665

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10010010110001001

Octal: 222611

Duodecimal: 375A1

Hexadecimal: 12589

Square: 5646771025

Square Root: 274.1258834915083

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

∑_{i for which n - i*(i-1)/2 >= 0} binomial (n - i*(i-1)/2, i). A63978

a(n) = 2·n³ - 3·n² + 5. A152064

Number of 3-connected bipartite graphs on n unlabeled nodes. A128953

Prime basis of A061373. A75145