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Properties of the Number 18055

Eighteen Thousand Fifty-Five

Basics

Value: 18054 → 18055 → 18056

Parity: odd

Prime: No

Previous Prime: 18049

Next Prime: 18059

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 5 × 23 × 157

Divisors: 1, 5, 23, 115, 157, 785, 3611, 18055

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100011010000111

Octal: 43207

Duodecimal: A547

Hexadecimal: 4687

Square: 325983025

Square Root: 134.36889521016388

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

T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 1 and 1 0 1 vertically. A207269
Expansion of ∏k>=1 (1 + xk/(1 + x2·k/(1 + x3·k))). A327718
a(n) is the smallest positive integer which can be represented as the sum of distinct nonzero n-gonal pyramidal numbers in exactly n ways, or 0 if no such integer exists. A350210
Expansion of ∏k>=1 1/(1 - xk)k*((k-22+k)/2). A294958
Number of nX5 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 1 and 1 0 1 vertically. A207266
Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 1 and 1 0 1 vertically. A207273
Numbers n such that the three numbers π(n), π(n2), and π(n3) are prime. A233463
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, 0, 0), (-1, 1, -1), (0, 0, 1), (1, 0, -1)}. A148119
Number of walks within N3 (the first octant of Z3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, -1), (0, 0, -1), (0, 0, 1), (1, 0, 1)}. A150301
a(n) = |{0 < k <= n: the number of twin prime pairs not exceeding k·n is a square}|. A237840