520155424 has 48 divisors (see below), whose sum is σ = 1040256000. Its totient is φ = 255999744.

The previous prime is 520155359. The next prime is 520155463. The reversal of 520155424 is 424551025.

It is a junction number, because it is equal to n+sod(n) for n = 520155392 and 520155401.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 605107 + ... + 605965.

It is an arithmetic number, because the mean of its divisors is an integer number (21672000).

Almost surely, 2^520155424 is an apocalyptic number.

It is an amenable number.

520155424 is a deficient number, since it is larger than the sum of its proper divisors (520100576).

520155424 is a wasteful number, since it uses less digits than its factorization.

520155424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145 (or 1137 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 520155424 is about 22806.9161440121. The cubic root of 520155424 is about 804.2252613370.

The spelling of 520155424 in words is "five hundred twenty million, one hundred fifty-five thousand, four hundred twenty-four".