Properties of the Number 75609

Seventy-Five Thousand Six Hundred Nine

Basics

Value: 75608 → 75609 → 75610

Parity: odd

Prime: No

Previous Prime: 75583

Next Prime: 75611

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 31 × 271

Divisors: 1, 3, 9, 31, 93, 271, 279, 813, 2439, 8401

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10010011101011001

Octal: 223531

Duodecimal: 37909

Hexadecimal: 12759

Square: 5716720881

Square Root: 274.9709075520536

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

Triangular matrix T, read by rows, that satisfies: SHIFT_LEFT(column 0 of T^p) = p*(column p+1 of T), or [T^p](m,0) = p·T(p+m,p+1) for all m>=1 and p>=-1. A104980

Divisors of 10¹⁵ - 1. A111117

Column 3 of triangle A104980, omitting leading zeros. A104982

Numbers k dividing every cyclic permutation of k³. A242680

a(n) = (10n+1)*(10n+9). A1535

a(1) = 1, a(n) = smallest prime number not occurring earlier such that the concatenation a(n-1) and a(n) is a prime. A75609