91745111 has 4 divisors (see below), whose sum is σ = 92361000. Its totient is φ = 91129224.

The previous prime is 91745083. The next prime is 91745113. The reversal of 91745111 is 11154719.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11154719 = 563 ⋅19813.

It is a cyclic number.

It is not a de Polignac number, because 91745111 - 2¹⁴ = 91728727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91745113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307721 + ... + 308018.

It is an arithmetic number, because the mean of its divisors is an integer number (23090250).

Almost surely, 2^91745111 is an apocalyptic number.

91745111 is a deficient number, since it is larger than the sum of its proper divisors (615889).

91745111 is a wasteful number, since it uses less digits than its factorization.

91745111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615888.

The product of its digits is 1260, while the sum is 29.

The square root of 91745111 is about 9578.3668232116. The cubic root of 91745111 is about 451.0184521206.

The spelling of 91745111 in words is "ninety-one million, seven hundred forty-five thousand, one hundred eleven".