Properties of the Number 61225

Sixty-One Thousand Two Hundred Twenty-Five

Basics

Value: 61224 → 61225 → 61226

Parity: odd

Prime: No

Previous Prime: 61223

Next Prime: 61231

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 5 ² × 31 × 79

Divisors: 1, 5, 25, 31, 79, 155, 395, 775, 1975, 2449

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1110111100101001

Octal: 167451

Duodecimal: 2B521

Hexadecimal: ef29

Square: 3748500625

Square Root: 247.43686063317244

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 ∏_n>=1 (1+xⁿ)^prime(n). A61152

Number of strict compositions of n with no three consecutive parts in arithmetic progression. A325849

a(n) = n*(n+1)*(n² + 21·n + 50)/24. A101854

a(n) = - a(n-1) - a(n-2) - a(n-3) + 50*(n-4) + 50·a(n-5) + 50·a(n-6) + 50·a(n-7), n >= 8. A109793

Numbers of the form k³ + (k + 1)⁴ + (k + 2)⁵ + (k + 3)⁶. A61225