91275367 has 2 divisors, whose sum is σ = 91275368. Its totient is φ = 91275366.

The previous prime is 91275361. The next prime is 91275403. The reversal of 91275367 is 76357219.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91275367 - 2¹¹ = 91273319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91275361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45637683 + 45637684.

It is an arithmetic number, because the mean of its divisors is an integer number (45637684).

Almost surely, 2^91275367 is an apocalyptic number.

91275367 is a deficient number, since it is larger than the sum of its proper divisors (1).

91275367 is an equidigital number, since it uses as much as digits as its factorization.

91275367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79380, while the sum is 40.

The square root of 91275367 is about 9553.8142644705. The cubic root of 91275367 is about 450.2473816757.

The spelling of 91275367 in words is "ninety-one million, two hundred seventy-five thousand, three hundred sixty-seven".