91427075 has 6 divisors (see below), whose sum is σ = 113369604. Its totient is φ = 73141640.

The previous prime is 91427009. The next prime is 91427117. The reversal of 91427075 is 57072419.

It is not a de Polignac number, because 91427075 - 2¹² = 91422979 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1828517 + ... + 1828566.

It is an arithmetic number, because the mean of its divisors is an integer number (18894934).

Almost surely, 2^91427075 is an apocalyptic number.

91427075 is a deficient number, since it is larger than the sum of its proper divisors (21942529).

91427075 is a wasteful number, since it uses less digits than its factorization.

91427075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3657093 (or 3657088 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 91427075 is about 9561.7506242319. The cubic root of 91427075 is about 450.4966943627.

The spelling of 91427075 in words is "ninety-one million, four hundred twenty-seven thousand, seventy-five".