520117858 has 8 divisors (see below), whose sum is σ = 840190428. Its totient is φ = 240054384.

The previous prime is 520117847. The next prime is 520117859. The reversal of 520117858 is 858711025.

It can be written as a sum of positive squares in 2 ways, for example, as 519247369 + 870489 = 22787^2 + 933^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (520117859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10002241 + ... + 10002292.

Almost surely, 2^520117858 is an apocalyptic number.

520117858 is a deficient number, since it is larger than the sum of its proper divisors (320072570).

520117858 is a wasteful number, since it uses less digits than its factorization.

520117858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20004548.

The product of its (nonzero) digits is 22400, while the sum is 37.

The square root of 520117858 is about 22806.0925631727. The cubic root of 520117858 is about 804.2059002947.

The spelling of 520117858 in words is "five hundred twenty million, one hundred seventeen thousand, eight hundred fifty-eight".