91129052 has 24 divisors (see below), whose sum is σ = 186138624. Its totient is φ = 38223792.

The previous prime is 91129033. The next prime is 91129067. The reversal of 91129052 is 25092119.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33308 + ... + 35939.

It is an arithmetic number, because the mean of its divisors is an integer number (7755776).

Almost surely, 2^91129052 is an apocalyptic number.

It is an amenable number.

91129052 is an abundant number, since it is smaller than the sum of its proper divisors (95009572).

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

91129052 is a wasteful number, since it uses less digits than its factorization.

91129052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69305 (or 69303 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 91129052 is about 9546.1537804500. The cubic root of 91129052 is about 450.0066698600.

The spelling of 91129052 in words is "ninety-one million, one hundred twenty-nine thousand, fifty-two".