520504064 has 36 divisors (see below), whose sum is σ = 1074816960. Its totient is φ = 251274240.

The previous prime is 520504063. The next prime is 520504067. The reversal of 520504064 is 460405025.

It is not an unprimeable number, because it can be changed into a prime (520504063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27632 + ... + 42479.

Almost surely, 2^520504064 is an apocalyptic number.

It is an amenable number.

520504064 is an abundant number, since it is smaller than the sum of its proper divisors (554312896).

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

520504064 is an equidigital number, since it uses as much as digits as its factorization.

520504064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70156 (or 70142 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 520504064 is about 22814.5581592105. The cubic root of 520504064 is about 804.4049015379.

Adding to 520504064 its reverse (460405025), we get a palindrome (980909089).

The spelling of 520504064 in words is "five hundred twenty million, five hundred four thousand, sixty-four".