Properties of the Number 55390

Fifty-Five Thousand Three Hundred Ninety

Basics

Value: 55389 → 55390 → 55391

Parity: even

Prime: No

Previous Prime: 55381

Next Prime: 55399

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 5 × 29 × 191

Divisors: 1, 2, 5, 10, 29, 58, 145, 191, 290, 382

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1101100001011110

Octal: 154136

Duodecimal: 2807A

Hexadecimal: d85e

Square: 3068052100

Square Root: 235.35080199565922

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 with every element equal to 1, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero. A299307

Numbers m such that abs(K(m+1) - K(m)) = 2, and both m and m+1 are squarefree (A005117), where K(m) = A002034(m) is the Kempner function. A346212

Expansion of ∏_k>=1 (1 - k·x^k) / (1 + x^k). A269339

Number of nX5 0..1 arrays with every element equal to 1, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero. A299304

Numbers k such that (178·10^k - 7)/9 is prime. A290955

Number of n X n 0..1 arrays with every element equal to 1, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero. A299302

Terms of A007634 where n - 40 is not a square. A55390