91575396 has 144 divisors (see below), whose sum is σ = 272982528. Its totient is φ = 25574400.

The previous prime is 91575389. The next prime is 91575403. The reversal of 91575396 is 69357519.

It is an interprime number because it is at equal distance from previous prime (91575389) and next prime (91575403).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 410541 + ... + 410763.

It is an arithmetic number, because the mean of its divisors is an integer number (1895712).

Almost surely, 2^91575396 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 91575396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136491264).

91575396 is an abundant number, since it is smaller than the sum of its proper divisors (181407132).

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

91575396 is a wasteful number, since it uses less digits than its factorization.

91575396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322 (or 317 counting only the distinct ones).

The product of its digits is 255150, while the sum is 45.

The square root of 91575396 is about 9569.5034353931. The cubic root of 91575396 is about 450.7401744623.

It can be divided in two parts, 915753 and 96, that added together give a square (915849 = 957²).

The spelling of 91575396 in words is "ninety-one million, five hundred seventy-five thousand, three hundred ninety-six".