91555125 has 16 divisors (see below), whose sum is σ = 152348352. Its totient is φ = 48829200.

The previous prime is 91555097. The next prime is 91555133. The reversal of 91555125 is 52155519.

It is not a de Polignac number, because 91555125 - 2¹³ = 91546933 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 121699 + ... + 122448.

It is an arithmetic number, because the mean of its divisors is an integer number (9521772).

Almost surely, 2^91555125 is an apocalyptic number.

It is an amenable number.

91555125 is a deficient number, since it is larger than the sum of its proper divisors (60793227).

91555125 is a wasteful number, since it uses less digits than its factorization.

91555125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244165 (or 244155 counting only the distinct ones).

The product of its digits is 11250, while the sum is 33.

The square root of 91555125 is about 9568.4442309082. Note that the first 3 decimals coincide. The cubic root of 91555125 is about 450.7069136058.

The spelling of 91555125 in words is "ninety-one million, five hundred fifty-five thousand, one hundred twenty-five".