Properties of the Number 61516

Sixty-One Thousand Five Hundred Sixteen

Basics

Value: 61515 → 61516 → 61517

Parity: even

Prime: No

Previous Prime: 61511

Next Prime: 61519

Digit Sum: 19

Digital Root: 1

Palindrome: Yes

Factorization: 2 ² × 7 × 13 ³

Divisors: 1, 2, 4, 7, 13, 14, 26, 28, 52, 91

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111000001001100

Octal: 170114

Duodecimal: 2B724

Hexadecimal: f04c

Square: 3784218256

Square Root: 248.02419236840586

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

Base-10 palindromes that start with 6. A43041

Number of paraffins. A6009

a(n) = ((n-th prime)⁵-(n-th prime)³)/6. A138435

Palindromes that are the sum of two positive cubes. A162710

a(n) = n² concatenated with reverse(n²) divided by 11. A84009

a(n) is the square of the side length of a simplex whose n-dimensional inner hypervolume is equal to its (n-1)-dimensional surface hypervolume. As a result, the sequence starts at n=2. A364922

a(n) = n*(1 - (-1)ⁿ - 2*(3 + (-1)ⁿ)*n² + 2·n⁴)/384. A350689

Number of nX3 0..2 arrays avoiding the pattern z z+1 z in any row or column. A207216

a(0) = 1; a(n) is obtained by incrementing each digit of a(n-1) by 4. A61516