520445863 has 16 divisors (see below), whose sum is σ = 621444096. Its totient is φ = 426159360.

The previous prime is 520445843. The next prime is 520445879. The reversal of 520445863 is 368544025.

It is a cyclic number.

It is not a de Polignac number, because 520445863 - 2⁵ = 520445831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520445843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169623 + ... + 172663.

It is an arithmetic number, because the mean of its divisors is an integer number (38840256).

Almost surely, 2^520445863 is an apocalyptic number.

520445863 is a deficient number, since it is larger than the sum of its proper divisors (100998233).

520445863 is a wasteful number, since it uses less digits than its factorization.

520445863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4134.

The product of its (nonzero) digits is 115200, while the sum is 37.

The square root of 520445863 is about 22813.2826002748. The cubic root of 520445863 is about 804.3749184773.

Adding to 520445863 its reverse (368544025), we get a palindrome (888989888).

The spelling of 520445863 in words is "five hundred twenty million, four hundred forty-five thousand, eight hundred sixty-three".