7222351 has 4 divisors (see below), whose sum is σ = 7231672. Its totient is φ = 7213032.

The previous prime is 7222343. The next prime is 7222357. The reversal of 7222351 is 1532227.

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

It is a cyclic number.

It is not a de Polignac number, because 7222351 - 2³ = 7222343 is a prime.

It is a Duffinian number.

7222351 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7222357) 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, 3381 + ... + 5086.

It is an arithmetic number, because the mean of its divisors is an integer number (1807918).

Almost surely, 2^7222351 is an apocalyptic number.

7222351 is a deficient number, since it is larger than the sum of its proper divisors (9321).

7222351 is an equidigital number, since it uses as much as digits as its factorization.

7222351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9320.

The product of its digits is 840, while the sum is 22.

The square root of 7222351 is about 2687.4432087023. The cubic root of 7222351 is about 193.2974821222.

Adding to 7222351 its reverse (1532227), we get a palindrome (8754578).

The spelling of 7222351 in words is "seven million, two hundred twenty-two thousand, three hundred fifty-one".