520522520 has 32 divisors (see below), whose sum is σ = 1338487200. Its totient is φ = 178464768.

The previous prime is 520522501. The next prime is 520522529. The reversal of 520522520 is 25225025.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520522529) 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 7 ways as a sum of consecutive naturals, for example, 929225 + ... + 929784.

It is an arithmetic number, because the mean of its divisors is an integer number (41827725).

Almost surely, 2^520522520 is an apocalyptic number.

It is an amenable number.

520522520 is an abundant number, since it is smaller than the sum of its proper divisors (817964680).

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

520522520 is a wasteful number, since it uses less digits than its factorization.

520522520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859027 (or 1859023 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 520522520 is about 22814.9626342013. The cubic root of 520522520 is about 804.4144089382.

Adding to 520522520 its reverse (25225025), we get a palindrome (545747545).

The spelling of 520522520 in words is "five hundred twenty million, five hundred twenty-two thousand, five hundred twenty".