7221252 has 12 divisors (see below), whose sum is σ = 16849616. Its totient is φ = 2407080.

The previous prime is 7221251. The next prime is 7221257. The reversal of 7221252 is 2521227.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (7221251) 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, 300874 + ... + 300897.

Almost surely, 2^7221252 is an apocalyptic number.

It is an amenable number.

7221252 is an abundant number, since it is smaller than the sum of its proper divisors (9628364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7221252 is a wasteful number, since it uses less digits than its factorization.

7221252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601778 (or 601776 counting only the distinct ones).

The product of its digits is 560, while the sum is 21.

The square root of 7221252 is about 2687.2387314863. The cubic root of 7221252 is about 193.2876771567.

Adding to 7221252 its reverse (2521227), we get a palindrome (9742479).

The spelling of 7221252 in words is "seven million, two hundred twenty-one thousand, two hundred fifty-two".