530509 has 4 divisors (see below), whose sum is σ = 606304. Its totient is φ = 454716.

The previous prime is 530507. The next prime is 530513. The reversal of 530509 is 905035.

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 530509 - 2¹ = 530507 is a prime.

It is a Duffinian number.

530509 is a lucky number.

It is a nialpdrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 530509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37887 + ... + 37900.

It is an arithmetic number, because the mean of its divisors is an integer number (151576).

2⁵³⁰⁵⁰⁹ is an apocalyptic number.

It is an amenable number.

530509 is a deficient number, since it is larger than the sum of its proper divisors (75795).

530509 is an equidigital number, since it uses as much as digits as its factorization.

530509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75794.

The product of its (nonzero) digits is 675, while the sum is 22.

The square root of 530509 is about 728.3604876708. The cubic root of 530509 is about 80.9526217876.

The spelling of 530509 in words is "five hundred thirty thousand, five hundred nine".