520055218 has 8 divisors (see below), whose sum is σ = 788125212. Its totient is φ = 257346816.

The previous prime is 520055209. The next prime is 520055269. The reversal of 520055218 is 812550025.

It can be written as a sum of positive squares in 2 ways, for example, as 495819289 + 24235929 = 22267^2 + 4923^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1340155 + ... + 1340542.

Almost surely, 2^520055218 is an apocalyptic number.

520055218 is a deficient number, since it is larger than the sum of its proper divisors (268069994).

520055218 is a wasteful number, since it uses less digits than its factorization.

520055218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680796.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 520055218 is about 22804.7192045857. The cubic root of 520055218 is about 804.1736143559.

The spelling of 520055218 in words is "five hundred twenty million, fifty-five thousand, two hundred eighteen".