50919917 has 2 divisors, whose sum is σ = 50919918. Its totient is φ = 50919916.

The previous prime is 50919901. The next prime is 50919923. The reversal of 50919917 is 71991905.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43705321 + 7214596 = 6611^2 + 2686^2 .

It is a cyclic number.

It is not a de Polignac number, because 50919917 - 2⁴ = 50919901 is a 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 (50919977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25459958 + 25459959.

It is an arithmetic number, because the mean of its divisors is an integer number (25459959).

Almost surely, 2^50919917 is an apocalyptic number.

It is an amenable number.

50919917 is a deficient number, since it is larger than the sum of its proper divisors (1).

50919917 is an equidigital number, since it uses as much as digits as its factorization.

50919917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25515, while the sum is 41.

The square root of 50919917 is about 7135.8192942366. The cubic root of 50919917 is about 370.6487692385.

The spelling of 50919917 in words is "fifty million, nine hundred nineteen thousand, nine hundred seventeen".