7221941 has 4 divisors (see below), whose sum is σ = 7296492. Its totient is φ = 7147392.

The previous prime is 7221937. The next prime is 7221953. The reversal of 7221941 is 1491227.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2337841 + 4884100 = 1529^2 + 2210^2 .

It is a cyclic number.

It is not a de Polignac number, because 7221941 - 2² = 7221937 is a prime.

It is a Duffinian 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 7221941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37130 + ... + 37323.

It is an arithmetic number, because the mean of its divisors is an integer number (1824123).

Almost surely, 2^7221941 is an apocalyptic number.

It is an amenable number.

7221941 is a deficient number, since it is larger than the sum of its proper divisors (74551).

7221941 is an equidigital number, since it uses as much as digits as its factorization.

7221941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74550.

The product of its digits is 1008, while the sum is 26.

The square root of 7221941 is about 2687.3669269380. The cubic root of 7221941 is about 193.2938243351.

The spelling of 7221941 in words is "seven million, two hundred twenty-one thousand, nine hundred forty-one".