520922985 has 16 divisors (see below), whose sum is σ = 909247680. Its totient is φ = 252568640.

The previous prime is 520922951. The next prime is 520923031. The reversal of 520922985 is 589229025.

520922985 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 520922985 - 2¹² = 520918889 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1578390 + ... + 1578719.

It is an arithmetic number, because the mean of its divisors is an integer number (56827980).

Almost surely, 2^520922985 is an apocalyptic number.

520922985 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

520922985 is a deficient number, since it is larger than the sum of its proper divisors (388324695).

520922985 is a wasteful number, since it uses less digits than its factorization.

520922985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3157128.

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 520922985 is about 22823.7373144715. The cubic root of 520922985 is about 804.6206486468.

The spelling of 520922985 in words is "five hundred twenty million, nine hundred twenty-two thousand, nine hundred eighty-five".