520533520 has 60 divisors (see below), whose sum is σ = 1310531076. Its totient is φ = 192192000.

The previous prime is 520533487. The next prime is 520533521. The reversal of 520533520 is 25335025.

It can be written as a sum of positive squares in 6 ways, for example, as 51897616 + 468635904 = 7204^2 + 21648^2 .

It is not an unprimeable number, because it can be changed into a prime (520533521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5731 + ... + 32770.

Almost surely, 2^520533520 is an apocalyptic number.

It is an amenable number.

520533520 is an abundant number, since it is smaller than the sum of its proper divisors (789997556).

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

520533520 is a wasteful number, since it uses less digits than its factorization.

520533520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38540 (or 38521 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 520533520 is about 22815.2037027943. The cubic root of 520533520 is about 804.4200753572.

Adding to 520533520 its reverse (25335025), we get a palindrome (545868545).

The spelling of 520533520 in words is "five hundred twenty million, five hundred thirty-three thousand, five hundred twenty".