50118191 has 2 divisors, whose sum is σ = 50118192. Its totient is φ = 50118190.

The previous prime is 50118163. The next prime is 50118221. The reversal of 50118191 is 19181105.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50118191 - 2¹⁰ = 50117167 is a prime.

It is a super-2 number, since 2×50118191² = 5023666138224962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 50118191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50118151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25059095 + 25059096.

It is an arithmetic number, because the mean of its divisors is an integer number (25059096).

Almost surely, 2^50118191 is an apocalyptic number.

50118191 is a deficient number, since it is larger than the sum of its proper divisors (1).

50118191 is an equidigital number, since it uses as much as digits as its factorization.

50118191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 26.

The square root of 50118191 is about 7079.4202446246. The cubic root of 50118191 is about 368.6932010189.

Adding to 50118191 its reverse (19181105), we get a palindrome (69299296).

The spelling of 50118191 in words is "fifty million, one hundred eighteen thousand, one hundred ninety-one".