520715799 has 18 divisors (see below), whose sum is σ = 758351256. Its totient is φ = 344287800.

The previous prime is 520715749. The next prime is 520715801. The reversal of 520715799 is 997517025.

520715799 is a `hidden beast` number, since 5 + 2 + 0 + 71 + 579 + 9 = 666.

It is not a de Polignac number, because 520715799 - 2²⁷ = 386498071 is a prime.

It is a super-2 number, since 2×520715799² = 542289886656416802, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520715749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 840912 + ... + 841530.

Almost surely, 2^520715799 is an apocalyptic number.

520715799 is a deficient number, since it is larger than the sum of its proper divisors (237635457).

520715799 is an equidigital number, since it uses as much as digits as its factorization.

520715799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395 (or 773 counting only the distinct ones).

The product of its (nonzero) digits is 198450, while the sum is 45.

The square root of 520715799 is about 22819.1980358645. The cubic root of 520715799 is about 804.5139609376.

The spelling of 520715799 in words is "five hundred twenty million, seven hundred fifteen thousand, seven hundred ninety-nine".