91755072 has 112 divisors (see below), whose sum is σ = 279196800. Its totient is φ = 29514240.

The previous prime is 91755067. The next prime is 91755091. The reversal of 91755072 is 27055719.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 49197 + ... + 51027.

Almost surely, 2^91755072 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 91755072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139598400).

91755072 is an abundant number, since it is smaller than the sum of its proper divisors (187441728).

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

91755072 is a wasteful number, since it uses less digits than its factorization.

91755072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881 (or 1865 counting only the distinct ones).

The product of its (nonzero) digits is 22050, while the sum is 36.

The square root of 91755072 is about 9578.8867829200. The cubic root of 91755072 is about 451.0347742699.

The spelling of 91755072 in words is "ninety-one million, seven hundred fifty-five thousand, seventy-two".