7521212 has 24 divisors (see below), whose sum is σ = 13693680. Its totient is φ = 3611520.

The previous prime is 7521209. The next prime is 7521221. The reversal of 7521212 is 2121257.

7521212 is a modest number, since divided by 1212 gives 752 as remainder.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12887 + ... + 13457.

It is an arithmetic number, because the mean of its divisors is an integer number (570570).

Almost surely, 2^7521212 is an apocalyptic number.

It is an amenable number.

7521212 is a deficient number, since it is larger than the sum of its proper divisors (6172468).

7521212 is a wasteful number, since it uses less digits than its factorization.

7521212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 699 counting only the distinct ones).

The product of its digits is 280, while the sum is 20.

The square root of 7521212 is about 2742.4828167192. The cubic root of 7521212 is about 195.9277465178.

Adding to 7521212 its reverse (2121257), we get a palindrome (9642469).

The spelling of 7521212 in words is "seven million, five hundred twenty-one thousand, two hundred twelve".