Properties of the Number 65531

Sixty-Five Thousand Five Hundred Thirty-One

Basics

Value: 65530 → 65531 → 65532

Parity: odd

Prime: No

Previous Prime: 65521

Next Prime: 65537

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 19 × 3449

Divisors: 1, 19, 3449, 65531

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 1111111111111011

Octal: 177773

Duodecimal: 31B0B

Hexadecimal: fffb

Square: 4294311961

Square Root: 255.99023418872838

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) = 2ⁿ - 5. A168616

Semiprime nearest to 2ⁿ. (In case of a tie, choose the smaller). A117405

Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 366", based on the 5-celled von Neumann neighborhood. A281420

Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 435", based on the 5-celled von Neumann neighborhood. A288294

Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 569", based on the 5-celled von Neumann neighborhood. A289408

Partial sums of A162255. A164053

Monotonic ordering of nonnegative differences 4ⁱ-5^j, for 40>= i>=0, j>=0. A192161

a(n) = 2^2ⁿ - 5. A232460

Numbers that are not the sum of distinct terms of A353889. A353919

a(n) = round((2ⁿ - n - 1)/4). A173010