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3032221 = 13722133

3032221 has 4 divisors (see below), whose sum is σ = 3054492. Its totient is φ = 3009952.

The previous prime is 3032213. The next prime is 3032233. The reversal of 3032221 is 1222303.

It is a happy number.

3032221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1222303 = 5920717.

It can be written as a sum of positive squares in 2 ways, for example, as 1625625 + 1406596 = 1275^2 + 1186^2 .

It is a cyclic number.

It is not a de Polignac number, because 3032221 - 23 = 3032213 is a prime.

It is a Duffinian number.

3032221 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3032321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10930 + ... + 11203.

It is an arithmetic number, because the mean of its divisors is an integer number (763623).

Almost surely, 23032221 is an apocalyptic number.

It is an amenable number.

3032221 is a deficient number, since it is larger than the sum of its proper divisors (22271).

3032221 is a wasteful number, since it uses less digits than its factorization.

3032221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22270.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 3032221 is about 1741.3273672690. The cubic root of 3032221 is about 144.7394607941.

Adding to 3032221 its reverse (1222303), we get a palindrome (4254524).

The spelling of 3032221 in words is "three million, thirty-two thousand, two hundred twenty-one".

Divisors: 1 137 22133 3032221