2191441 has 8 divisors (see below), whose sum is σ = 2636480. Its totient is φ = 1779408.

The previous prime is 2191433. The next prime is 2191451. The reversal of 2191441 is 1441912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2191441 - 2³ = 2191433 is a prime.

2191441 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2191451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8106 + ... + 8371.

It is an arithmetic number, because the mean of its divisors is an integer number (329560).

2^2191441 is an apocalyptic number.

It is an amenable number.

2191441 is a deficient number, since it is larger than the sum of its proper divisors (445039).

2191441 is a wasteful number, since it uses less digits than its factorization.

2191441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16503.

The product of its digits is 288, while the sum is 22.

The square root of 2191441 is about 1480.3516474135. The cubic root of 2191441 is about 129.8902624223.

The spelling of 2191441 in words is "two million, one hundred ninety-one thousand, four hundred forty-one".