530812509 has 4 divisors (see below), whose sum is σ = 707750016. Its totient is φ = 353875004.

The previous prime is 530812483. The next prime is 530812523. The reversal of 530812509 is 905218035.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 530812509 - 2⁹ = 530811997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 530812509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530812559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88468749 + ... + 88468754.

It is an arithmetic number, because the mean of its divisors is an integer number (176937504).

Almost surely, 2^530812509 is an apocalyptic number.

It is an amenable number.

530812509 is a deficient number, since it is larger than the sum of its proper divisors (176937507).

530812509 is a wasteful number, since it uses less digits than its factorization.

530812509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176937506.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 530812509 is about 23039.3686762463. The cubic root of 530812509 is about 809.6805675367.

The spelling of 530812509 in words is "five hundred thirty million, eight hundred twelve thousand, five hundred nine".