50905691 has 2 divisors, whose sum is σ = 50905692. Its totient is φ = 50905690.

The previous prime is 50905681. The next prime is 50905703. The reversal of 50905691 is 19650905.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50905691 - 2²² = 46711387 is a prime.

It is not a weakly prime, because it can be changed into another prime (50905681) 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, 25452845 + 25452846.

It is an arithmetic number, because the mean of its divisors is an integer number (25452846).

Almost surely, 2^50905691 is an apocalyptic number.

50905691 is a deficient number, since it is larger than the sum of its proper divisors (1).

50905691 is an equidigital number, since it uses as much as digits as its factorization.

50905691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 50905691 is about 7134.8224224573. The cubic root of 50905691 is about 370.6142487547.

The spelling of 50905691 in words is "fifty million, nine hundred five thousand, six hundred ninety-one".