91948271 has 2 divisors, whose sum is σ = 91948272. Its totient is φ = 91948270.

The previous prime is 91948249. The next prime is 91948327. The reversal of 91948271 is 17284919.

It is a weak prime.

It is an emirp because it is prime and its reverse (17284919) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91948271 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 (91948231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45974135 + 45974136.

It is an arithmetic number, because the mean of its divisors is an integer number (45974136).

Almost surely, 2^91948271 is an apocalyptic number.

91948271 is a deficient number, since it is larger than the sum of its proper divisors (1).

91948271 is an equidigital number, since it uses as much as digits as its factorization.

91948271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 41.

The square root of 91948271 is about 9588.9661069377. The cubic root of 91948271 is about 451.3511178310.

The spelling of 91948271 in words is "ninety-one million, nine hundred forty-eight thousand, two hundred seventy-one".