49805191 has 2 divisors, whose sum is σ = 49805192. Its totient is φ = 49805190.

The previous prime is 49805179. The next prime is 49805233. The reversal of 49805191 is 19150894.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49805191 - 2⁵ = 49805159 is a prime.

It is a pancake number, because a pancake can be divided into 49805191 parts by 9980 straight cuts.

It is a self number, because there is not a number n which added to its sum of digits gives 49805191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49805131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24902595 + 24902596.

It is an arithmetic number, because the mean of its divisors is an integer number (24902596).

Almost surely, 2^49805191 is an apocalyptic number.

49805191 is a deficient number, since it is larger than the sum of its proper divisors (1).

49805191 is an equidigital number, since it uses as much as digits as its factorization.

49805191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 49805191 is about 7057.2792916251. The cubic root of 49805191 is about 367.9240721385.

The spelling of 49805191 in words is "forty-nine million, eight hundred five thousand, one hundred ninety-one".