520102305 has 12 divisors (see below), whose sum is σ = 901510740. Its totient is φ = 277387872.

The previous prime is 520102273. The next prime is 520102309. The reversal of 520102305 is 503201025.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 219010401 + 301091904 = 14799^2 + 17352^2 .

It is not a de Polignac number, because 520102305 - 2⁵ = 520102273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520102309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5778870 + ... + 5778959.

It is an arithmetic number, because the mean of its divisors is an integer number (75125895).

Almost surely, 2^520102305 is an apocalyptic number.

It is an amenable number.

520102305 is a deficient number, since it is larger than the sum of its proper divisors (381408435).

520102305 is a wasteful number, since it uses less digits than its factorization.

520102305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11557840 (or 11557837 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 520102305 is about 22805.7515771789. The cubic root of 520102305 is about 804.1978842019.

The spelling of 520102305 in words is "five hundred twenty million, one hundred two thousand, three hundred five".