91297 has 2 divisors, whose sum is σ = 91298. Its totient is φ = 91296.

The previous prime is 91291. The next prime is 91303. The reversal of 91297 is 79219.

It is a balanced prime because it is at equal distance from previous prime (91291) and next prime (91303).

It can be written as a sum of positive squares in only one way, i.e., 77841 + 13456 = 279^2 + 116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91297 is a prime.

It is not a weakly prime, because it can be changed into another prime (91291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45648 + 45649.

It is an arithmetic number, because the mean of its divisors is an integer number (45649).

2⁹¹²⁹⁷ is an apocalyptic number.

It is an amenable number.

91297 is a deficient number, since it is larger than the sum of its proper divisors (1).

91297 is an equidigital number, since it uses as much as digits as its factorization.

91297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134, while the sum is 28.

The square root of 91297 is about 302.1539342785. The cubic root of 91297 is about 45.0282949623.

It can be divided in two parts, 9129 and 7, that multiplied together give a triangular number (63903 = T₃₅₇).

The spelling of 91297 in words is "ninety-one thousand, two hundred ninety-seven".