50218291 has 2 divisors, whose sum is σ = 50218292. Its totient is φ = 50218290.

The previous prime is 50218279. The next prime is 50218297. The reversal of 50218291 is 19281205.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50218291 is a prime.

It is not a weakly prime, because it can be changed into another prime (50218297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25109145 + 25109146.

It is an arithmetic number, because the mean of its divisors is an integer number (25109146).

Almost surely, 2^50218291 is an apocalyptic number.

50218291 is a deficient number, since it is larger than the sum of its proper divisors (1).

50218291 is an equidigital number, since it uses as much as digits as its factorization.

50218291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 50218291 is about 7086.4865060197. The cubic root of 50218291 is about 368.9384988191.

Adding to 50218291 its reverse (19281205), we get a palindrome (69499496).

The spelling of 50218291 in words is "fifty million, two hundred eighteen thousand, two hundred ninety-one".