2197271 has 4 divisors (see below), whose sum is σ = 2203392. Its totient is φ = 2191152.

The previous prime is 2197253. The next prime is 2197277. The reversal of 2197271 is 1727912.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2197271 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 (2197277) 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, 2486 + ... + 3251.

It is an arithmetic number, because the mean of its divisors is an integer number (550848).

2^2197271 is an apocalyptic number.

2197271 is a deficient number, since it is larger than the sum of its proper divisors (6121).

2197271 is an equidigital number, since it uses as much as digits as its factorization.

2197271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6120.

The product of its digits is 1764, while the sum is 29.

The square root of 2197271 is about 1482.3194662420. The cubic root of 2197271 is about 130.0053449479.

The spelling of 2197271 in words is "two million, one hundred ninety-seven thousand, two hundred seventy-one".