2305221 has 8 divisors (see below), whose sum is σ = 3207360. Its totient is φ = 1469952.

The previous prime is 2305169. The next prime is 2305271. The reversal of 2305221 is 1225032.

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

It is not a de Polignac number, because 2305221 - 2¹¹ = 2303173 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2305221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2305271) 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, 16636 + ... + 16773.

It is an arithmetic number, because the mean of its divisors is an integer number (400920).

2^2305221 is an apocalyptic number.

It is an amenable number.

2305221 is a deficient number, since it is larger than the sum of its proper divisors (902139).

2305221 is a wasteful number, since it uses less digits than its factorization.

2305221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33435.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 2305221 is about 1518.2954257983. The cubic root of 2305221 is about 132.1004171618.

The spelling of 2305221 in words is "two million, three hundred five thousand, two hundred twenty-one".