530309 has 12 divisors (see below), whose sum is σ = 608076. Its totient is φ = 459648.

The previous prime is 530303. The next prime is 530329. The reversal of 530309 is 903035.

It can be written as a sum of positive squares in 2 ways, for example, as 36100 + 494209 = 190^2 + 703^2 .

It is not a de Polignac number, because 530309 - 2⁴ = 530293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4637 + ... + 4749.

It is an arithmetic number, because the mean of its divisors is an integer number (50673).

2⁵³⁰³⁰⁹ is an apocalyptic number.

It is an amenable number.

530309 is a deficient number, since it is larger than the sum of its proper divisors (77767).

530309 is a wasteful number, since it uses less digits than its factorization.

530309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 405, while the sum is 20.

The square root of 530309 is about 728.2231800760. The cubic root of 530309 is about 80.9424475591.

The spelling of 530309 in words is "five hundred thirty thousand, three hundred nine".