520057305 has 12 divisors (see below), whose sum is σ = 901432740. Its totient is φ = 277363872.

The previous prime is 520057289. The next prime is 520057313. The reversal of 520057305 is 503750025.

It can be written as a sum of positive squares in 2 ways, for example, as 121815369 + 398241936 = 11037^2 + 19956^2 .

It is not a de Polignac number, because 520057305 - 2⁴ = 520057289 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5778370 + ... + 5778459.

It is an arithmetic number, because the mean of its divisors is an integer number (75119395).

Almost surely, 2^520057305 is an apocalyptic number.

It is an amenable number.

520057305 is a deficient number, since it is larger than the sum of its proper divisors (381375435).

520057305 is a wasteful number, since it uses less digits than its factorization.

520057305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11556840 (or 11556837 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 27.

The square root of 520057305 is about 22804.7649626125. The cubic root of 520057305 is about 804.1746900802.

The spelling of 520057305 in words is "five hundred twenty million, fifty-seven thousand, three hundred five".