7367221 has 2 divisors, whose sum is σ = 7367222. Its totient is φ = 7367220.

The previous prime is 7367207. The next prime is 7367237. The reversal of 7367221 is 1227637.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5640625 + 1726596 = 2375^2 + 1314^2 .

It is an emirp because it is prime and its reverse (1227637) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7367221 - 2¹¹ = 7365173 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7367221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7367021) 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 as a sum of consecutive naturals, namely, 3683610 + 3683611.

It is an arithmetic number, because the mean of its divisors is an integer number (3683611).

Almost surely, 2^7367221 is an apocalyptic number.

It is an amenable number.

7367221 is a deficient number, since it is larger than the sum of its proper divisors (1).

7367221 is an equidigital number, since it uses as much as digits as its factorization.

7367221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528, while the sum is 28.

The square root of 7367221 is about 2714.2625149385. The cubic root of 7367221 is about 194.5813591600.

The spelling of 7367221 in words is "seven million, three hundred sixty-seven thousand, two hundred twenty-one".