Properties of the Number 16655

Sixteen Thousand Six Hundred Fifty-Five

Basics

Value: 16654 → 16655 → 16656

Parity: odd

Prime: No

Previous Prime: 16651

Next Prime: 16657

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 × 3331

Divisors: 1, 5, 3331, 16655

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100000100001111

Octal: 40417

Duodecimal: 977B

Hexadecimal: 410f

Square: 277389025

Square Root: 129.05425215776503

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) = ∑_k=1..n (-1)^k-1 * binomial(floor(n/k)+2,3). A366395

Number of stable forests with n nodes. A6544

Denominators of continued fraction convergents to sqrt(807). A42557

5 times centered pentagonal numbers: 5*(5·n² + 5·n + 2)/2. A164015

Number T(n,k) of self-avoiding planar walks of length k starting at (0,0), ending at (n,0), remaining in the first quadrant and using steps (0,1), (1,0), (1,1), (-1,1), and (1,-1) with the restriction that (0,1) is never used below the diagonal and (1,0) is never used above the diagonal; triangle T(n,k), k>=0, floor((sqrt(1+8·k)-1)/2)<=n<=k, read by columns. A284652

Row sums of triangle A179901. A179902

Number of length n+2 0..4 arrays with no three unequal elements in a row and new values 0..4 introduced in 0..4 order. A243635

Numbers k such that both ∑_i=1..k i·prime(i) and ∑_i=1..k (k+1-i)*prime(i) are prime. A356178

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 1, 1), (1, 0, 1), (1, 1, -1)}. A148877

Triangle T(n,k) read by rows, defined by the equation f(x, y) := ∑_{n, k} T(n, k) * y^k * xⁿ = 1/(1 - x·y - x²*y·f(x, y+1)). A357438