Properties of the Number 55271

Fifty-Five Thousand Two Hundred Seventy-One

Basics

Value: 55270 → 55271 → 55272

Parity: odd

Prime: No

Previous Prime: 55259

Next Prime: 55291

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 19 × 2909

Divisors: 1, 19, 2909, 55271

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1101011111100111

Octal: 153747

Duodecimal: 27B9B

Hexadecimal: d7e7

Square: 3054883441

Square Root: 235.09785196806882

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 tilings of a 5 X n rectangle using n pentominoes of shapes W, I, L, F. A247680

Absolute discriminants of complex quadratic fields with 3-class group of type (3,3) and 3-principalization type (2241). A247689

Numbers k such that k!4 + 2⁶ is prime, where k!4 = k!!!! is the quadruple factorial number (A007662). A291347

Devaraj numbers: squarefree r-prime-factor (r>1) integers N=p1*...*pr such that φ(N)=(p1-1)*...*(pr-1) divides gcd(p1-1,...,pr-1)²*(N-1)^r-2. A104016

a(n) = 5·a(n-1) - a(n-2) with a(0)=1, a(1)=7. A55271

Let the n-th Carmichael number A002997(n) = p1·p2*...*pr, where p1 < p2 < ... < pr are primes. Then a(n) = (p1-1) * (p1·p2*...*pr - 1)^r-2 / ((p2-1)*...*(pr-1)). A180044