7221532 has 18 divisors (see below), whose sum is σ = 13426952. Its totient is φ = 3397824.

The previous prime is 7221523. The next prime is 7221547. The reversal of 7221532 is 2351227.

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 1968 + ... + 4279.

Almost surely, 2^7221532 is an apocalyptic number.

It is an amenable number.

7221532 is a deficient number, since it is larger than the sum of its proper divisors (6205420).

7221532 is a wasteful number, since it uses less digits than its factorization.

7221532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6285 (or 6266 counting only the distinct ones).

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

The square root of 7221532 is about 2687.2908290693. The cubic root of 7221532 is about 193.2901753315.

Adding to 7221532 its reverse (2351227), we get a palindrome (9572759).

The spelling of 7221532 in words is "seven million, two hundred twenty-one thousand, five hundred thirty-two".