Properties of the Number 61047

Sixty-One Thousand Forty-Seven

Basics

Value: 61046 → 61047 → 61048

Parity: odd

Prime: No

Previous Prime: 61043

Next Prime: 61051

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 7 × 17 × 19

Divisors: 1, 3, 7, 9, 17, 19, 21, 27, 51, 57

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1110111001110111

Octal: 167167

Duodecimal: 2B3B3

Hexadecimal: ee77

Square: 3726736209

Square Root: 247.07691110259574

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

a(n) = 3·a(n-2) - a(n-3) with a(0)=0, a(1)=3, a(2)=0. A214699

Natural number that is a factor of its number of "feasible" partition(s). A254437

Concatenation of n-th Fibonacci number and n-th prime. A138821

Number of integer-sided hexagons having perimeter n, modulo rotations but not reflections. A293823

a(0) = ... = a(4) = 1; a(n) = ∑_k=1..n-5 a(k) * a(n-k-5). A346049

The r-th term of the n-th row of the following array contains the sum of r successively decreasing integers beginning from n, 0 < r <= n (see Example). A110426

a(n) = 3·binomial(n+1, 5). A253942

a(n) = 169·n² + 2·n. A158220

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 13. A31691

Sum(j=1,n,floor(A000041(j)/j)). A86736