91125474 has 64 divisors (see below), whose sum is σ = 212015232. Its totient is φ = 25804800.

The previous prime is 91125467. The next prime is 91125479. The reversal of 91125474 is 47452119.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (91125479) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 270234 + ... + 270570.

It is an arithmetic number, because the mean of its divisors is an integer number (3312738).

Almost surely, 2^91125474 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91125474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106007616).

91125474 is an abundant number, since it is smaller than the sum of its proper divisors (120889758).

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

91125474 is a wasteful number, since it uses less digits than its factorization.

91125474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611.

The product of its digits is 10080, while the sum is 33.

The square root of 91125474 is about 9545.9663732909. The cubic root of 91125474 is about 450.0007802456. Note that the first 3 decimals are identical.

The spelling of 91125474 in words is "ninety-one million, one hundred twenty-five thousand, four hundred seventy-four".