91329525 has 120 divisors (see below), whose sum is σ = 205254720. Its totient is φ = 39191040.

The previous prime is 91329499. The next prime is 91329541. The reversal of 91329525 is 52592319.

It is a happy number.

It is not a de Polignac number, because 91329525 - 2¹¹ = 91327477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91329525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 240786 + ... + 241164.

It is an arithmetic number, because the mean of its divisors is an integer number (1710456).

Almost surely, 2^91329525 is an apocalyptic number.

It is an amenable number.

91329525 is an abundant number, since it is smaller than the sum of its proper divisors (113925195).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91329525 is a wasteful number, since it uses less digits than its factorization.

91329525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 411 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 91329525 is about 9556.6482094927. The cubic root of 91329525 is about 450.3364151037.

The spelling of 91329525 in words is "ninety-one million, three hundred twenty-nine thousand, five hundred twenty-five".