2191133 has 12 divisors (see below), whose sum is σ = 2580732. Its totient is φ = 1854720.

The previous prime is 2191127. The next prime is 2191159. The reversal of 2191133 is 3311912.

2191133 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 840889 + 1350244 = 917^2 + 1162^2 .

It is not a de Polignac number, because 2191133 - 2⁶ = 2191069 is a prime.

2191133 is strictly pandigital in base 8.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4523 + ... + 4983.

It is an arithmetic number, because the mean of its divisors is an integer number (215061).

2^2191133 is an apocalyptic number.

It is an amenable number.

2191133 is a deficient number, since it is larger than the sum of its proper divisors (389599).

2191133 is an equidigital number, since it uses as much as digits as its factorization.

2191133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572 (or 565 counting only the distinct ones).

The product of its digits is 162, while the sum is 20.

The square root of 2191133 is about 1480.2476144213. The cubic root of 2191133 is about 129.8841769173.

The spelling of 2191133 in words is "two million, one hundred ninety-one thousand, one hundred thirty-three".