50218313 has 4 divisors (see below), whose sum is σ = 50265600. Its totient is φ = 50171028.

The previous prime is 50218307. The next prime is 50218319. The reversal of 50218313 is 31381205.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (50218307) and next prime (50218319).

It is a cyclic number.

It is not a de Polignac number, because 50218313 - 2⁴ = 50218297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50218319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22013 + ... + 24186.

It is an arithmetic number, because the mean of its divisors is an integer number (12566400).

Almost surely, 2^50218313 is an apocalyptic number.

It is an amenable number.

50218313 is a deficient number, since it is larger than the sum of its proper divisors (47287).

50218313 is a wasteful number, since it uses less digits than its factorization.

50218313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47286.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 50218313 is about 7086.4880582698. The cubic root of 50218313 is about 368.9385526949.

Adding to 50218313 its reverse (31381205), we get a palindrome (81599518).

The spelling of 50218313 in words is "fifty million, two hundred eighteen thousand, three hundred thirteen".