Properties of the Number -5518

Five Hundred Eighteen

Basics

Value: -5519 → -5518 → -5517

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 31 × 89

Divisors: 1, 2, 31, 62, 89, 178, 2759, 5518

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1010110001110

Octal: -12616

Duodecimal: -323A

Hexadecimal: -158e

Square: 30448324

Square Root: 74.28324171709255

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 (-k)^floor(n/k - 1). A345037

Expansion of ∏_k>0 theta₃(q^k), where theta₃() is the Jacobi θ function. A320067

Binary digits, representing the rows of triangle A141743, written in base 10. A141746

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction. A250877

G.f.: (1+x⁸+x⁹+x¹⁰+x¹⁸)/((1-x²)*(1-x³)*(1-x⁴)*(1-x⁵)*(1-x⁶)*(1-x⁷)). A97851

Positive integers n such that n¹⁹ + 1 is semiprime (A001358). A104657

Number of n X 3 0..4 arrays with each element equal to the number its horizontal and vertical zero neighbors. A197049

Number of partitions p of n such that median(p) > multiplicity(max(p)). A240210

Position of n-th appearance of 2n in the sequence of prime gaps (A001223). If 2n does not appear at least n times, set a(n) = -1. A356223

G.f. satisfies: A(x) = A(x² + 2·x³)/(1-x). A251581