50545991 has 2 divisors, whose sum is σ = 50545992. Its totient is φ = 50545990.

The previous prime is 50545987. The next prime is 50545997. The reversal of 50545991 is 19954505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50545991 - 2² = 50545987 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50545997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25272995 + 25272996.

It is an arithmetic number, because the mean of its divisors is an integer number (25272996).

Almost surely, 2^50545991 is an apocalyptic number.

50545991 is a deficient number, since it is larger than the sum of its proper divisors (1).

50545991 is an equidigital number, since it uses as much as digits as its factorization.

50545991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40500, while the sum is 38.

The square root of 50545991 is about 7109.5703808317. The cubic root of 50545991 is about 369.7392635892.

The spelling of 50545991 in words is "fifty million, five hundred forty-five thousand, nine hundred ninety-one".