3065221 has 2 divisors, whose sum is σ = 3065222. Its totient is φ = 3065220.

The previous prime is 3065159. The next prime is 3065243. The reversal of 3065221 is 1225603.

It is a happy number.

3065221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2656900 + 408321 = 1630^2 + 639^2 .

It is an emirp because it is prime and its reverse (1225603) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3065221 - 2¹⁵ = 3032453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3065261) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1532610 + 1532611.

It is an arithmetic number, because the mean of its divisors is an integer number (1532611).

Almost surely, 2^3065221 is an apocalyptic number.

It is an amenable number.

3065221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3065221 is an equidigital number, since it uses as much as digits as its factorization.

3065221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 3065221 is about 1750.7772559638. Note that the first 3 decimals coincide. The cubic root of 3065221 is about 145.2626393315.

The spelling of 3065221 in words is "three million, sixty-five thousand, two hundred twenty-one".