Properties of the Number 530

Five Hundred Thirty

Basics

Value: 529 → 530 → 531

Parity: even

Prime: No

Previous Prime: 523

Next Prime: 541

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 2 × 5 × 53

Divisors: 1, 2, 5, 10, 53, 106, 265, 530

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1000010010

Octal: 1022

Duodecimal: 382

Hexadecimal: 212

Square: 280900

Square Root: 23.021728866442675

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) = n² + 1. A2522

a(n) = sigma₂(n): sum of squares of divisors of n. A1157

Sum of totient function: a(n) = ∑_k=1..n φ(k), cf. A000010. A2088

Multiples of 10: a(n) = 10·n. A8592

Start with 1 and repeatedly reverse the decimal digits and add 4 to get the next term. A117828

Number of integer partitions of n whose smallest part is equal to the number of parts. A6141

The "comma sequence": the lexicographically earliest sequence of positive numbers with the property that the sequence formed by the pairs of digits adjacent to the commas between the terms is the same as the sequence of successive differences between the terms. A121805

Infinite sequence starting with a(0)=0 such that A049820(a(k)) = a(k-1) for all k>=1, where A049820(n) = n - (number of divisors of n). A259934

a(0) = 1, a(n) = sum of digits of all previous terms. A4207

a(n) = ∑_d∣n (-1)^d-1*d². A321543