520314985 has 4 divisors (see below), whose sum is σ = 624377988. Its totient is φ = 416251984.

The previous prime is 520314961. The next prime is 520314989. The reversal of 520314985 is 589413025.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56731024 + 463583961 = 7532^2 + 21531^2 .

It is a cyclic number.

It is not a de Polignac number, because 520314985 - 2¹¹ = 520312937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520314989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52031494 + ... + 52031503.

It is an arithmetic number, because the mean of its divisors is an integer number (156094497).

Almost surely, 2^520314985 is an apocalyptic number.

It is an amenable number.

520314985 is a deficient number, since it is larger than the sum of its proper divisors (104063003).

520314985 is a wasteful number, since it uses less digits than its factorization.

520314985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104063002.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 520314985 is about 22810.4139594177. The cubic root of 520314985 is about 804.3074866758.

The spelling of 520314985 in words is "five hundred twenty million, three hundred fourteen thousand, nine hundred eighty-five".