2397221 has 8 divisors (see below), whose sum is σ = 2649024. Its totient is φ = 2157760.

The previous prime is 2397217. The next prime is 2397251. The reversal of 2397221 is 1227932.

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 2397221 - 2² = 2397217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2397251) 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, 2675 + ... + 3456.

It is an arithmetic number, because the mean of its divisors is an integer number (331128).

2^2397221 is an apocalyptic number.

It is an amenable number.

2397221 is a deficient number, since it is larger than the sum of its proper divisors (251803).

2397221 is a wasteful number, since it uses less digits than its factorization.

2397221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6171.

The product of its digits is 1512, while the sum is 26.

The square root of 2397221 is about 1548.2961603001. The cubic root of 2397221 is about 133.8348935532.

The spelling of 2397221 in words is "two million, three hundred ninety-seven thousand, two hundred twenty-one".