91641452 has 48 divisors (see below), whose sum is σ = 191903040. Its totient is φ = 37469952.

The previous prime is 91641439. The next prime is 91641481. The reversal of 91641452 is 25414619.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54074 + ... + 55742.

It is an arithmetic number, because the mean of its divisors is an integer number (3997980).

Almost surely, 2^91641452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91641452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95951520).

91641452 is an abundant number, since it is smaller than the sum of its proper divisors (100261588).

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

91641452 is a wasteful number, since it uses less digits than its factorization.

91641452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770 (or 1768 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 91641452 is about 9572.9541939779. The cubic root of 91641452 is about 450.8485257523.

It can be divided in two parts, 9 and 1641452, that added together give a palindrome (1641461).

The spelling of 91641452 in words is "ninety-one million, six hundred forty-one thousand, four hundred fifty-two".