91525889 has 16 divisors (see below), whose sum is σ = 112882560. Its totient is φ = 72264960.

The previous prime is 91525849. The next prime is 91525891. The reversal of 91525889 is 98852519.

It is a cyclic number.

It is not a de Polignac number, because 91525889 - 2²⁴ = 74748673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91525829) 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, 66569 + ... + 67929.

It is an arithmetic number, because the mean of its divisors is an integer number (7055160).

Almost surely, 2^91525889 is an apocalyptic number.

It is an amenable number.

91525889 is a deficient number, since it is larger than the sum of its proper divisors (21356671).

91525889 is a wasteful number, since it uses less digits than its factorization.

91525889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120.

The product of its digits is 259200, while the sum is 47.

The square root of 91525889 is about 9566.9163788548. The cubic root of 91525889 is about 450.6589342412.

The spelling of 91525889 in words is "ninety-one million, five hundred twenty-five thousand, eight hundred eighty-nine".