Properties of the Number 90211

Ninety Thousand Two Hundred Eleven

Basics

Value: 90210 → 90211 → 90212

Parity: odd

Prime: No

Previous Prime: 90203

Next Prime: 90217

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 11 × 59 × 139

Divisors: 1, 11, 59, 139, 649, 1529, 8201, 90211

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110000001100011

Octal: 260143

Duodecimal: 44257

Hexadecimal: 16063

Square: 8138024521

Square Root: 300.35146079218595

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

Numbers k such that 6·10^k + R_k is prime, where R_k = 11...1 is the repunit (A002275) of length k. A56717

Consider the recurrence d(k) = (d(k-3)*d(k-2) + 1)/(d(k-5)*d(k-4)*d(k-3)²*d(k-2)²*d(k-1)), with d(0..4) = {1,1,1,2,1}. a(n) = numerator(d(2·n+1)). A377264

Alternating row sums of array A078739 ((2,2)-Stirling2). A90211