91375 has 16 divisors (see below), whose sum is σ = 123552. Its totient is φ = 67200.

The previous prime is 91373. The next prime is 91381. The reversal of 91375 is 57319.

It is not a de Polignac number, because 91375 - 2¹ = 91373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91373) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2104 + ... + 2146.

It is an arithmetic number, because the mean of its divisors is an integer number (7722).

2⁹¹³⁷⁵ is an apocalyptic number.

91375 is a deficient number, since it is larger than the sum of its proper divisors (32177).

91375 is a wasteful number, since it uses less digits than its factorization.

91375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75 (or 65 counting only the distinct ones).

The product of its digits is 945, while the sum is 25.

The square root of 91375 is about 302.2829800038. The cubic root of 91375 is about 45.0411146871.

91375 divided by its sum of digits (25) gives a triangular number (3655 = T₈₅).

The spelling of 91375 in words is "ninety-one thousand, three hundred seventy-five".