50490191 has 2 divisors, whose sum is σ = 50490192. Its totient is φ = 50490190.

The previous prime is 50490169. The next prime is 50490199. The reversal of 50490191 is 19109405.

50490191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50490191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50490199) 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 as a sum of consecutive naturals, namely, 25245095 + 25245096.

It is an arithmetic number, because the mean of its divisors is an integer number (25245096).

Almost surely, 2^50490191 is an apocalyptic number.

50490191 is a deficient number, since it is larger than the sum of its proper divisors (1).

50490191 is an equidigital number, since it uses as much as digits as its factorization.

50490191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 50490191 is about 7105.6450094274. The cubic root of 50490191 is about 369.6031562068.

Adding to 50490191 its reverse (19109405), we get a palindrome (69599596).

The spelling of 50490191 in words is "fifty million, four hundred ninety thousand, one hundred ninety-one".