Properties of the Number 16555

Sixteen Thousand Five Hundred Fifty-Five

Basics

Value: 16554 → 16555 → 16556

Parity: odd

Prime: No

Previous Prime: 16553

Next Prime: 16561

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 × 7 × 11 × 43

Divisors: 1, 5, 7, 11, 35, 43, 55, 77, 215, 301

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100000010101011

Octal: 40253

Duodecimal: 96B7

Hexadecimal: 40ab

Square: 274068025

Square Root: 128.666234887013

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) = binomial(10·n+5,n)/(2·n+1). A234528

Fifth column (m=4) of (1,6)-Pascal triangle A096956. A96958

Expansion of g.f. A(x) satisfying A( x²*(1 + 3·x)*A(x) )⁵ = A( x³*(1 + 5·x)*A(x)² )³. A370535

a(n) = n*(9·n-2). A13656

a(n) = smallest k having at least four prime divisors d such that (d + n) | (k + n). A202159

a(n) = ∑_{k=0..floor(3·n/11)} binomial(3·n-10·k,k). A392350

Quasi-Carmichael numbers to base -5: squarefree composites n such that prime p∣n ==> p+5∣n+5. A29565

The least k such that the polynomial cyclotomic(k,x) has n different coefficients. A231611

First occurrence of n in A345079, or -1 if n does not occur in A345079. A345080

Smallest order of the cyclotomic polynomial whose maximal coefficient in absolute value is n. A136418