520520772 has 48 divisors (see below), whose sum is σ = 1236816000. Its totient is φ = 170353920.

The previous prime is 520520743. The next prime is 520520779. The reversal of 520520772 is 277025025.

It is not an unprimeable number, because it can be changed into a prime (520520779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157497 + ... + 160767.

It is an arithmetic number, because the mean of its divisors is an integer number (25767000).

Almost surely, 2^520520772 is an apocalyptic number.

It is an amenable number.

520520772 is an abundant number, since it is smaller than the sum of its proper divisors (716295228).

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

520520772 is a wasteful number, since it uses less digits than its factorization.

520520772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3516 (or 3514 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 520520772 is about 22814.9243259757. The cubic root of 520520772 is about 804.4135084853.

Adding to 520520772 its reverse (277025025), we get a palindrome (797545797).

The spelling of 520520772 in words is "five hundred twenty million, five hundred twenty thousand, seven hundred seventy-two".