520055305 has 32 divisors (see below), whose sum is σ = 779904000. Its totient is φ = 323421120.

The previous prime is 520055303. The next prime is 520055309. The reversal of 520055305 is 503550025.

It is not a de Polignac number, because 520055305 - 2¹ = 520055303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 520055305.

It is not an unprimeable number, because it can be changed into a prime (520055303) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190762 + ... + 193468.

It is an arithmetic number, because the mean of its divisors is an integer number (24372000).

Almost surely, 2^520055305 is an apocalyptic number.

520055305 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

520055305 is a deficient number, since it is larger than the sum of its proper divisors (259848695).

520055305 is a wasteful number, since it uses less digits than its factorization.

520055305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229.

The product of its (nonzero) digits is 3750, while the sum is 25.

The square root of 520055305 is about 22804.7211120855. The cubic root of 520055305 is about 804.1736591993.

The spelling of 520055305 in words is "five hundred twenty million, fifty-five thousand, three hundred five".