7343221 has 4 divisors (see below), whose sum is σ = 7410700. Its totient is φ = 7275744.

The previous prime is 7343213. The next prime is 7343227. The reversal of 7343221 is 1223437.

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 1768900 + 5574321 = 1330^2 + 2361^2 .

It is a cyclic number.

It is not a de Polignac number, because 7343221 - 2³ = 7343213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7343192 and 7343201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7343227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33576 + ... + 33793.

It is an arithmetic number, because the mean of its divisors is an integer number (1852675).

Almost surely, 2^7343221 is an apocalyptic number.

It is an amenable number.

7343221 is a deficient number, since it is larger than the sum of its proper divisors (67479).

7343221 is a wasteful number, since it uses less digits than its factorization.

7343221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67478.

The product of its digits is 1008, while the sum is 22.

The square root of 7343221 is about 2709.8378180253. The cubic root of 7343221 is about 194.3698351278.

Adding to 7343221 its reverse (1223437), we get a palindrome (8566658).

The spelling of 7343221 in words is "seven million, three hundred forty-three thousand, two hundred twenty-one".