91168245 has 24 divisors (see below), whose sum is σ = 180600576. Its totient is φ = 41676768.

The previous prime is 91168243. The next prime is 91168261. The reversal of 91168245 is 54286119.

It is not a de Polignac number, because 91168245 - 2¹ = 91168243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91168243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 144397 + ... + 145026.

It is an arithmetic number, because the mean of its divisors is an integer number (7525024).

Almost surely, 2^91168245 is an apocalyptic number.

It is an amenable number.

91168245 is a deficient number, since it is larger than the sum of its proper divisors (89432331).

91168245 is a wasteful number, since it uses less digits than its factorization.

91168245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289441 (or 289438 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 91168245 is about 9548.2063760688. The cubic root of 91168245 is about 450.0711739274.

The spelling of 91168245 in words is "ninety-one million, one hundred sixty-eight thousand, two hundred forty-five".