520530330 has 16 divisors (see below), whose sum is σ = 1249272864. Its totient is φ = 138808080.

The previous prime is 520530317. The next prime is 520530407. The reversal of 520530330 is 33035025.

It is a junction number, because it is equal to n+sod(n) for n = 520530297 and 520530306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8675476 + ... + 8675535.

It is an arithmetic number, because the mean of its divisors is an integer number (78079554).

Almost surely, 2^520530330 is an apocalyptic number.

520530330 is an abundant number, since it is smaller than the sum of its proper divisors (728742534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520530330 is a wasteful number, since it uses less digits than its factorization.

520530330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17351021.

The product of its (nonzero) digits is 1350, while the sum is 21.

The square root of 520530330 is about 22815.1337931646. The cubic root of 520530330 is about 804.4184321039.

Adding to 520530330 its reverse (33035025), we get a palindrome (553565355).

The spelling of 520530330 in words is "five hundred twenty million, five hundred thirty thousand, three hundred thirty".