520424564 has 12 divisors (see below), whose sum is σ = 993537888. Its totient is φ = 236556600.

The previous prime is 520424539. The next prime is 520424579. The reversal of 520424564 is 465424025.

It is a self number, because there is not a number n which added to its sum of digits gives 520424564.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5913872 + ... + 5913959.

It is an arithmetic number, because the mean of its divisors is an integer number (82794824).

Almost surely, 2^520424564 is an apocalyptic number.

It is an amenable number.

520424564 is a deficient number, since it is larger than the sum of its proper divisors (473113324).

520424564 is a wasteful number, since it uses less digits than its factorization.

520424564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11827846 (or 11827844 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

The square root of 520424564 is about 22812.8157841157. The cubic root of 520424564 is about 804.3639454403.

Adding to 520424564 its reverse (465424025), we get a palindrome (985848589).

The spelling of 520424564 in words is "five hundred twenty million, four hundred twenty-four thousand, five hundred sixty-four".