Properties of the Number 511

Five Hundred Eleven

Basics

Value: 510 → 511 → 512

Parity: odd

Prime: No

Previous Prime: 509

Next Prime: 521

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 7 × 73

Divisors: 1, 7, 73, 511

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111111111

Octal: 777

Duodecimal: 367

Hexadecimal: 1ff

Square: 261121

Square Root: 22.60530911091463

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 - 1. (Sometimes called Mersenne numbers, although that name is usually reserved for A001348.) A225

Triangle of Stirling numbers of the second kind, S2(n,k), n >= 1, 1 <= k <= n. A8277

Triangle of Stirling numbers of 2nd kind, S(n,k), n >= 0, 0 <= k <= n. A48993

Binary palindromes: numbers whose binary expansion is palindromic. A6995

Number of partitions of n in which the number of parts divides n. A67538

Numbers of the form 2^n-1*(2^n·m-1)/(2ⁿ-1), n >= 1, m >= 1. A272919

a(n) = 2·n² - 1. A56220

a(n) is the smallest m > 1 such that m divides ∑_k=1..m prime(k)ⁿ. A85450

Numbers of the form 2ⁱ - 2^j with i >= j. A23758

Generalized heptagonal numbers: m*(5·m - 3)/2, m = 0, +-1, +-2 +-3, ... A85787