520445164 has 6 divisors (see below), whose sum is σ = 910779044. Its totient is φ = 260222580.

The previous prime is 520445161. The next prime is 520445179. The reversal of 520445164 is 461544025.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (520445161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65055642 + ... + 65055649.

Almost surely, 2^520445164 is an apocalyptic number.

It is an amenable number.

520445164 is a deficient number, since it is larger than the sum of its proper divisors (390333880).

520445164 is a wasteful number, since it uses less digits than its factorization.

520445164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130111295 (or 130111293 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 520445164 is about 22813.2672802473. The cubic root of 520445164 is about 804.3745583641.

Adding to 520445164 its reverse (461544025), we get a palindrome (981989189).

The spelling of 520445164 in words is "five hundred twenty million, four hundred forty-five thousand, one hundred sixty-four".