Properties of the Number 75121

Seventy-Five Thousand One Hundred Twenty-One

Basics

Value: 75120 → 75121 → 75122

Parity: odd

Prime: No

Previous Prime: 75109

Next Prime: 75133

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 43 × 1747

Divisors: 1, 43, 1747, 75121

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10010010101110001

Octal: 222561

Duodecimal: 37581

Hexadecimal: 12571

Square: 5643164641

Square Root: 274.08210448695843

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

Expansion of e.g.f. ∑_k>=0 exp((4^k - 1)*x) * x^k/k!. A360934

Decimal numbers that when converted to hexadecimal produce a number that uses the same digits as the original number. A133287

Number of points of norm <= n in the body-centered cubic lattice with the lattice parameter equal to 2/sqrt(3). A276648

First integer reached when starting with n/floor(sqrt(n)) and iterating the map x -> x·ceiling(x) A075120(n) times, or -1 if no integer is ever reached. A75121