50170813 has 16 divisors (see below), whose sum is σ = 63262080. Its totient is φ = 38649600.

The previous prime is 50170789. The next prime is 50170817. The reversal of 50170813 is 31807105.

It is not a de Polignac number, because 50170813 - 2⁵ = 50170781 is a prime.

It is a super-2 number, since 2×50170813² = 5034220954161938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50170817) 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, 3193 + ... + 10513.

It is an arithmetic number, because the mean of its divisors is an integer number (3953880).

Almost surely, 2^50170813 is an apocalyptic number.

It is an amenable number.

50170813 is a deficient number, since it is larger than the sum of its proper divisors (13091267).

50170813 is a wasteful number, since it uses less digits than its factorization.

50170813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7428.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 50170813 is about 7083.1358168540. The cubic root of 50170813 is about 368.8221933534.

Adding to 50170813 its reverse (31807105), we get a palindrome (81977918).

The spelling of 50170813 in words is "fifty million, one hundred seventy thousand, eight hundred thirteen".