520330 has 16 divisors (see below), whose sum is σ = 953064. Its totient is φ = 204480.

The previous prime is 520313. The next prime is 520339. The reversal of 520330 is 33025.

520330 = 62² + 63² + ... + 121².

It can be written as a sum of positive squares in 4 ways, for example, as 134689 + 385641 = 367^2 + 621^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 520330.

It is not an unprimeable number, because it can be changed into a prime (520339) by changing a digit.

520330 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184 + ... + 1036.

2⁵²⁰³³⁰ is an apocalyptic number.

520330 is a deficient number, since it is larger than the sum of its proper divisors (432734).

520330 is a wasteful number, since it uses less digits than its factorization.

520330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921.

The product of its (nonzero) digits is 90, while the sum is 13.

The square root of 520330 is about 721.3390326331. The cubic root of 520330 is about 80.4315223374.

Adding to 520330 its reverse (33025), we get a palindrome (553355).

The spelling of 520330 in words is "five hundred twenty thousand, three hundred thirty".