49955891 has 2 divisors, whose sum is σ = 49955892. Its totient is φ = 49955890.

The previous prime is 49955863. The next prime is 49955903. The reversal of 49955891 is 19855994.

49955891 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 not a de Polignac number, because 49955891 - 2⁶ = 49955827 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (49955821) 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, 24977945 + 24977946.

It is an arithmetic number, because the mean of its divisors is an integer number (24977946).

Almost surely, 2^49955891 is an apocalyptic number.

49955891 is a deficient number, since it is larger than the sum of its proper divisors (1).

49955891 is an equidigital number, since it uses as much as digits as its factorization.

49955891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 50.

The square root of 49955891 is about 7067.9481463859. The cubic root of 49955891 is about 368.2947853619.

The spelling of 49955891 in words is "forty-nine million, nine hundred fifty-five thousand, eight hundred ninety-one".