22521041 has 2 divisors, whose sum is σ = 22521042. Its totient is φ = 22521040.

The previous prime is 22520999. The next prime is 22521089. The reversal of 22521041 is 14012522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20286016 + 2235025 = 4504^2 + 1495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22521041 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22521091) by changing a digit.

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 as a sum of consecutive naturals, namely, 11260520 + 11260521.

It is an arithmetic number, because the mean of its divisors is an integer number (11260521).

Almost surely, 2^22521041 is an apocalyptic number.

It is an amenable number.

22521041 is a deficient number, since it is larger than the sum of its proper divisors (1).

22521041 is an equidigital number, since it uses as much as digits as its factorization.

22521041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 22521041 is about 4745.6338881123. The cubic root of 22521041 is about 282.3987827539.

Adding to 22521041 its reverse (14012522), we get a palindrome (36533563).

The spelling of 22521041 in words is "twenty-two million, five hundred twenty-one thousand, forty-one".