Properties of the Number 30521

Thirty Thousand Five Hundred Twenty-One

Basics

Value: 30520 → 30521 → 30522

Parity: odd

Prime: No

Previous Prime: 30517

Next Prime: 30529

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 23 × 1327

Divisors: 1, 23, 1327, 30521

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111011100111001

Octal: 73471

Duodecimal: 157B5

Hexadecimal: 7739

Square: 931531441

Square Root: 174.70260444538312

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

a(n) = 2·5ⁿ - 3ⁿ. A81625

Convolution of L(n+1) := A000204(n+1) (Lucas), n>=0, with L(n+2), n>=0. A67980

Number of Carmichael numbers (A002997) less than 2ⁿ. A225005

Composite numbers whose concatenation of their aliquot parts, in descending order, is a palindrome. A249301

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 537", based on the 5-celled von Neumann neighborhood. A272792

Number of perfect matchings (or domino tilings) in O₆ X P_n. A145404

Numbers k such that 32771·2^k + 1 is prime. A281483

Product of first n palindromic primes plus 1. A30521

Number of 7Xn 0..2 arrays with no element equal to the sum of elements to its left or one plus the sum of the elements above it, modulo 3. A239034