2197191 has 8 divisors (see below), whose sum is σ = 2936560. Its totient is φ = 1461312.

The previous prime is 2197189. The next prime is 2197193. The reversal of 2197191 is 1917912.

It is an interprime number because it is at equal distance from previous prime (2197189) and next prime (2197193).

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

It is not a de Polignac number, because 2197191 - 2¹ = 2197189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197193) 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, 1611 + ... + 2643.

It is an arithmetic number, because the mean of its divisors is an integer number (367070).

2^2197191 is an apocalyptic number.

2197191 is a deficient number, since it is larger than the sum of its proper divisors (739369).

2197191 is a wasteful number, since it uses less digits than its factorization.

2197191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745.

The product of its digits is 1134, while the sum is 30.

The square root of 2197191 is about 1482.2924812600. The cubic root of 2197191 is about 130.0037671492.

The spelling of 2197191 in words is "two million, one hundred ninety-seven thousand, one hundred ninety-one".