Properties of the Number 61207

Sixty-One Thousand Two Hundred Seven

Basics

Value: 61206 → 61207 → 61208

Parity: odd

Prime: No

Previous Prime: 61169

Next Prime: 61211

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 97 × 631

Divisors: 1, 97, 631, 61207

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110111100010111

Octal: 167427

Duodecimal: 2B507

Hexadecimal: ef17

Square: 3746296849

Square Root: 247.40048504398692

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 g.f.: exp( ∑_n>=1 [ ∑_k>=0 C(n+k-1,k)^n+k-1 *x^k ] *xⁿ/n ). A181078

a(n) = ∑_k=0..n-1 binomial(n-1,k)^n-1 * n/(n-k). A181079

Number of subgroups of index n of the braid group on 3 strands <a,b∣aba=bab>= <c,d∣c²=d³>, the fundamental group of the complement of a trefoil knot. A61207