520005424 has 20 divisors (see below), whose sum is σ = 1009529136. Its totient is φ = 259481792.

The previous prime is 520005383. The next prime is 520005487. The reversal of 520005424 is 424500025.

It is a junction number, because it is equal to n+sod(n) for n = 520005395 and 520005404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24259 + ... + 40354.

Almost surely, 2^520005424 is an apocalyptic number.

It is an amenable number.

520005424 is a deficient number, since it is larger than the sum of its proper divisors (489523712).

520005424 is a wasteful number, since it uses less digits than its factorization.

520005424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65124 (or 65118 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 520005424 is about 22803.6274307400. The cubic root of 520005424 is about 804.1479476589.

Adding to 520005424 its reverse (424500025), we get a palindrome (944505449).

The spelling of 520005424 in words is "five hundred twenty million, five thousand, four hundred twenty-four".