49201891 has 2 divisors, whose sum is σ = 49201892. Its totient is φ = 49201890.

The previous prime is 49201883. The next prime is 49201921. The reversal of 49201891 is 19810294.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49201891 - 2³ = 49201883 is a prime.

It is not a weakly prime, because it can be changed into another prime (49201291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24600945 + 24600946.

It is an arithmetic number, because the mean of its divisors is an integer number (24600946).

Almost surely, 2^49201891 is an apocalyptic number.

49201891 is a deficient number, since it is larger than the sum of its proper divisors (1).

49201891 is an equidigital number, since it uses as much as digits as its factorization.

49201891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 49201891 is about 7014.4059620185. The cubic root of 49201891 is about 366.4324543748.

The spelling of 49201891 in words is "forty-nine million, two hundred one thousand, eight hundred ninety-one".