Properties of the Number 18554

Eighteen Thousand Five Hundred Fifty-Four

Basics

Value: 18553 → 18554 → 18555

Parity: even

Prime: No

Previous Prime: 18553

Next Prime: 18583

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 9277

Divisors: 1, 2, 9277, 18554

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 100100001111010

Octal: 44172

Duodecimal: A8A2

Hexadecimal: 487a

Square: 344250916

Square Root: 136.2130683891968

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 locally stable rooted identity trees with n nodes, meaning no branch is a subset of any other branch of the same root. A316474

Fibonacci sequence beginning 1, 11. A22101

G.f.: ∑_n>=0 xⁿ * (1 - xⁿ⁺¹)ⁿ / (1 + xⁿ⁺¹)ⁿ⁺¹. A323695

Number of unital quantales on n elements, up to isomorphism. A354495

Numbers k such that the continued fraction for sqrt(k) has period 63. A20402

Numbers such that n² = 29 mod 1193. A165989

Number of 3-step one space for components leftwards or up, two space for components rightwards or down asymmetric quasi-queen's tours (antidiagonal moves become knight moves) on an n X n board summed over all starting positions. A187858

Number of (n+1) X (4+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction. A250765

Least positive integer k such that prime(prime(prime(k)))+ prime(prime(prime(k·n))) = 2·prime(prime(p)) for some prime p. A261583

Row sums of A281348. A281347