520939797 has 16 divisors (see below), whose sum is σ = 812275200. Its totient is φ = 290756592.

The previous prime is 520939763. The next prime is 520939801. The reversal of 520939797 is 797939025.

It is a happy number.

It is not a de Polignac number, because 520939797 - 2¹⁵ = 520907029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520939747) 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, 287547 + ... + 289352.

It is an arithmetic number, because the mean of its divisors is an integer number (50767200).

Almost surely, 2^520939797 is an apocalyptic number.

It is an amenable number.

520939797 is a deficient number, since it is larger than the sum of its proper divisors (291335403).

520939797 is a wasteful number, since it uses less digits than its factorization.

520939797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576952.

The product of its (nonzero) digits is 1071630, while the sum is 51.

The square root of 520939797 is about 22824.1056122688. The cubic root of 520939797 is about 804.6293045245.

The spelling of 520939797 in words is "five hundred twenty million, nine hundred thirty-nine thousand, seven hundred ninety-seven".