91374317 has 2 divisors, whose sum is σ = 91374318. Its totient is φ = 91374316.

The previous prime is 91374293. The next prime is 91374343. The reversal of 91374317 is 71347319.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49758916 + 41615401 = 7054^2 + 6451^2 .

It is an emirp because it is prime and its reverse (71347319) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91374317 - 2⁸ = 91374061 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 (91374347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45687158 + 45687159.

It is an arithmetic number, because the mean of its divisors is an integer number (45687159).

Almost surely, 2^91374317 is an apocalyptic number.

It is an amenable number.

91374317 is a deficient number, since it is larger than the sum of its proper divisors (1).

91374317 is an equidigital number, since it uses as much as digits as its factorization.

91374317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 35.

The square root of 91374317 is about 9558.9914216930. The cubic root of 91374317 is about 450.4100246400.

The spelling of 91374317 in words is "ninety-one million, three hundred seventy-four thousand, three hundred seventeen".