Properties of the Number 61560

Sixty-One Thousand Five Hundred Sixty

Basics

Value: 61559 → 61560 → 61561

Parity: even

Prime: No

Previous Prime: 61559

Next Prime: 61561

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ⁴ × 5 × 19

Divisors: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1111000001111000

Octal: 170170

Duodecimal: 2B760

Hexadecimal: f078

Square: 3789633600

Square Root: 248.112877537624

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

Numbers i such that Fibonacci(i) is divisible by i, i+1, i+2, and i+3. A298685

Numbers i such that Fibonacci(i) is divisible by i+k for k=0,1,2,3,4. A298686

Irregular table read by rows: Take an octagon with all diagonals drawn, as in A333075. Then T(n,k) = number of k-sided polygons in that figure for k >= 3. A333076

Numbers k such that k+1 is a prime, k+2 is twice a prime, k+3 is three times a prime, and k+4 is four times a prime. A278585

Base 4 digital convolution sequence. A33641

Averages of twin prime pairs that are sums of 4 consecutive averages of twin prime pairs. A160918

Numbers with prime factorization pqr^3s^4. A190294

a(n) is the determinant of the 2 X 2 matrix whose entries (when read by rows) are the n-th primes congruent to 1, 3, 5, 7 mod 8 respectively. A337145

Number of edges in the n² X n² Sudoku graph. A182866

Triangle T(n,k) for solving differential equation A'(x)=G(A(x)), G(0)≠0. A190015