91675117 has 2 divisors, whose sum is σ = 91675118. Its totient is φ = 91675116.

The previous prime is 91675099. The next prime is 91675123. The reversal of 91675117 is 71157619.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87965641 + 3709476 = 9379^2 + 1926^2 .

It is a cyclic number.

It is not a de Polignac number, because 91675117 - 2¹¹ = 91673069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91675187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45837558 + 45837559.

It is an arithmetic number, because the mean of its divisors is an integer number (45837559).

Almost surely, 2^91675117 is an apocalyptic number.

It is an amenable number.

91675117 is a deficient number, since it is larger than the sum of its proper divisors (1).

91675117 is an equidigital number, since it uses as much as digits as its factorization.

91675117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13230, while the sum is 37.

The square root of 91675117 is about 9574.7123716590. The cubic root of 91675117 is about 450.9037262361.

The spelling of 91675117 in words is "ninety-one million, six hundred seventy-five thousand, one hundred seventeen".