Properties of the Number 65550

Sixty-Five Thousand Five Hundred Fifty

Basics

Value: 65549 → 65550 → 65551

Parity: even

Prime: No

Previous Prime: 65543

Next Prime: 65551

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 ² × 19 × 23

Divisors: 1, 2, 3, 5, 6, 10, 15, 19, 23, 25

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000000000001110

Octal: 200016

Duodecimal: 31B26

Hexadecimal: 1000e

Square: 4296802500

Square Root: 256.0273422898422

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

4-dimensional figurate numbers: a(n) = (5·n-1)*binomial(n+2,3)/4. A2418

a(n) = 2ⁿ⁺¹ + n - 1. A83706

Aliquot sequence starting at 46758. A171103

Values of m such that N = (am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,63. A65699

a(n) = 2ⁿ - A129629(n+1). A383182

Number of returns to the x-axis in all paths from (0,0) to (3n,0) that stay in the first quadrant (but may touch the horizontal axis), consisting of steps u=(2,1), U=(1,2), or d=(1,-1). A108436

1A coefficients in an expansion of the elliptic genus of the K3 surface. A169717

1/4 the number of (n+1) X 8 0..2 arrays with every 2 X 2 subblock having distinct clockwise edge differences. A209726

a(n) = binomial(floor(n/2),4) + (ceiling(n/2)-3)*binomial(floor(n/2),3). A234277

Number of (n+1) X (3+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nonincreasing x(i,j)-x(i-1,j) in the j direction. A250737