50856191 has 2 divisors, whose sum is σ = 50856192. Its totient is φ = 50856190.

The previous prime is 50856187. The next prime is 50856193. The reversal of 50856191 is 19165805.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 50856191 - 2² = 50856187 is a prime.

It is a Sophie Germain prime.

Together with 50856193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50856193) 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, 25428095 + 25428096.

It is an arithmetic number, because the mean of its divisors is an integer number (25428096).

Almost surely, 2^50856191 is an apocalyptic number.

50856191 is a deficient number, since it is larger than the sum of its proper divisors (1).

50856191 is an equidigital number, since it uses as much as digits as its factorization.

50856191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 50856191 is about 7131.3526767367. The cubic root of 50856191 is about 370.4940830493.

The spelling of 50856191 in words is "fifty million, eight hundred fifty-six thousand, one hundred ninety-one".