7521322 has 12 divisors (see below), whose sum is σ = 11795490. Its totient is φ = 3596648.

The previous prime is 7521317. The next prime is 7521329. The reversal of 7521322 is 2231257.

It can be written as a sum of positive squares in only one way, i.e., 7241481 + 279841 = 2691^2 + 529^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7521293 and 7521302.

It is not an unprimeable number, because it can be changed into a prime (7521329) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2497 + ... + 4612.

Almost surely, 2^7521322 is an apocalyptic number.

7521322 is a deficient number, since it is larger than the sum of its proper divisors (4274168).

7521322 is a wasteful number, since it uses less digits than its factorization.

7521322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7157 (or 7134 counting only the distinct ones).

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

The square root of 7521322 is about 2742.5028714661. The cubic root of 7521322 is about 195.9287016807.

Adding to 7521322 its reverse (2231257), we get a palindrome (9752579).

The spelling of 7521322 in words is "seven million, five hundred twenty-one thousand, three hundred twenty-two".