7522241 has 2 divisors, whose sum is σ = 7522242. Its totient is φ = 7522240.

The previous prime is 7522231. The next prime is 7522261. The reversal of 7522241 is 1422257.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7507600 + 14641 = 2740^2 + 121^2 .

It is an emirp because it is prime and its reverse (1422257) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7522241 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7522201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3761120 + 3761121.

It is an arithmetic number, because the mean of its divisors is an integer number (3761121).

Almost surely, 2^7522241 is an apocalyptic number.

It is an amenable number.

7522241 is a deficient number, since it is larger than the sum of its proper divisors (1).

7522241 is an equidigital number, since it uses as much as digits as its factorization.

7522241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1120, while the sum is 23.

The square root of 7522241 is about 2742.6704140308. The cubic root of 7522241 is about 195.9366812683.

Adding to 7522241 its reverse (1422257), we get a palindrome (8944498).

The spelling of 7522241 in words is "seven million, five hundred twenty-two thousand, two hundred forty-one".