2345221 has 4 divisors (see below), whose sum is σ = 2353792. Its totient is φ = 2336652.

The previous prime is 2345219. The next prime is 2345249. The reversal of 2345221 is 1225432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2345221 - 2¹ = 2345219 is a prime.

It is a Duffinian number.

2345221 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2345261) 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, 3861 + ... + 4426.

It is an arithmetic number, because the mean of its divisors is an integer number (588448).

2^2345221 is an apocalyptic number.

It is an amenable number.

2345221 is a deficient number, since it is larger than the sum of its proper divisors (8571).

2345221 is an equidigital number, since it uses as much as digits as its factorization.

2345221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8570.

The product of its digits is 480, while the sum is 19.

The square root of 2345221 is about 1531.4114404692. The cubic root of 2345221 is about 132.8601050383.

The spelling of 2345221 in words is "two million, three hundred forty-five thousand, two hundred twenty-one".