Properties of the Number 61216

Sixty-One Thousand Two Hundred Sixteen

Basics

Value: 61215 → 61216 → 61217

Parity: even

Prime: No

Previous Prime: 61211

Next Prime: 61223

Digit Sum: 16

Digital Root: 7

Palindrome: Yes

Factorization: 2 ⁵ × 1913

Divisors: 1, 2, 4, 8, 16, 32, 1913, 3826, 7652, 15304

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1110111100100000

Octal: 167440

Duodecimal: 2B514

Hexadecimal: ef20

Square: 3747398656

Square Root: 247.41867350707383

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

Number of partitions of n such that the least part occurs at least twice. A117989

Number of bicentered trees with n nodes. A677

T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00010001. A260177

Number of vertices formed when n equally spaced points are placed around a circle and all pairs of points are joined by an interior arc whose radius equals the circle's radius. A371254

Palindromes with exactly 6 prime factors (counted with multiplicity). A46332

Number of partitions of n such that m(greatest part) <= m(1), where m = multiplicity. A240077

Base-10 palindromes that start with 6. A43041

Smallest multiple of n which begins with R(n) and ends in n where R(n) (A004086) is the digit reversal of n. Suitable number of zeros are assumed to the left of the MSD if required. A77741

Biquadrateful (i.e., not biquadrate-free) palindromes. A133514

Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00010001. A260174