91265385 has 16 divisors (see below), whose sum is σ = 149587200. Its totient is φ = 47487360.

The previous prime is 91265381. The next prime is 91265411. The reversal of 91265385 is 58356219.

It is not a de Polignac number, because 91265385 - 2² = 91265381 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (91265381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73585 + ... + 74814.

It is an arithmetic number, because the mean of its divisors is an integer number (9349200).

Almost surely, 2^91265385 is an apocalyptic number.

It is an amenable number.

91265385 is a deficient number, since it is larger than the sum of its proper divisors (58321815).

91265385 is a wasteful number, since it uses less digits than its factorization.

91265385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148448.

The product of its digits is 64800, while the sum is 39.

The square root of 91265385 is about 9553.2918410357. The cubic root of 91265385 is about 450.2309678525.

The spelling of 91265385 in words is "ninety-one million, two hundred sixty-five thousand, three hundred eighty-five".