91161152 has 28 divisors (see below), whose sum is σ = 187139580. Its totient is φ = 44007936.

The previous prime is 91161151. The next prime is 91161209. The reversal of 91161152 is 25116119.

It can be written as a sum of positive squares in 2 ways, for example, as 67502656 + 23658496 = 8216^2 + 4864^2 .

It is not an unprimeable number, because it can be changed into a prime (91161151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22703 + ... + 26414.

Almost surely, 2^91161152 is an apocalyptic number.

It is an amenable number.

91161152 is an abundant number, since it is smaller than the sum of its proper divisors (95978428).

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

91161152 is a wasteful number, since it uses less digits than its factorization.

91161152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49158 (or 49148 counting only the distinct ones).

The product of its digits is 540, while the sum is 26.

The square root of 91161152 is about 9547.8349378275. The cubic root of 91161152 is about 450.0595015970.

The spelling of 91161152 in words is "ninety-one million, one hundred sixty-one thousand, one hundred fifty-two".