91353271 has 2 divisors, whose sum is σ = 91353272. Its totient is φ = 91353270.

The previous prime is 91353253. The next prime is 91353293. The reversal of 91353271 is 17235319.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91353271 - 2⁹ = 91352759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91353671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45676635 + 45676636.

It is an arithmetic number, because the mean of its divisors is an integer number (45676636).

Almost surely, 2^91353271 is an apocalyptic number.

91353271 is a deficient number, since it is larger than the sum of its proper divisors (1).

91353271 is an equidigital number, since it uses as much as digits as its factorization.

91353271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 31.

The square root of 91353271 is about 9557.8905099399. The cubic root of 91353271 is about 450.3754414093.

The spelling of 91353271 in words is "ninety-one million, three hundred fifty-three thousand, two hundred seventy-one".