520785274 has 16 divisors (see below), whose sum is σ = 815795712. Its totient is φ = 248871568.

The previous prime is 520785263. The next prime is 520785313. The reversal of 520785274 is 472587025.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64887 + ... + 72469.

It is an arithmetic number, because the mean of its divisors is an integer number (50987232).

Almost surely, 2^520785274 is an apocalyptic number.

520785274 is a deficient number, since it is larger than the sum of its proper divisors (295010438).

520785274 is a wasteful number, since it uses less digits than its factorization.

520785274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9101.

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 520785274 is about 22820.7202778528. The cubic root of 520785274 is about 804.5497393295.

The spelling of 520785274 in words is "five hundred twenty million, seven hundred eighty-five thousand, two hundred seventy-four".