91475048 has 128 divisors (see below), whose sum is σ = 221184000. Its totient is φ = 34594560.

The previous prime is 91475039. The next prime is 91475093. The reversal of 91475048 is 84057419.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1157873 + ... + 1157951.

It is an arithmetic number, because the mean of its divisors is an integer number (1728000).

Almost surely, 2^91475048 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 91475048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110592000).

91475048 is an abundant number, since it is smaller than the sum of its proper divisors (129708952).

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

91475048 is a wasteful number, since it uses less digits than its factorization.

91475048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 91475048 is about 9564.2588839910. The cubic root of 91475048 is about 450.5754744507.

The spelling of 91475048 in words is "ninety-one million, four hundred seventy-five thousand, forty-eight".