11052721 has 2 divisors, whose sum is σ = 11052722. Its totient is φ = 11052720.

The previous prime is 11052707. The next prime is 11052731. The reversal of 11052721 is 12725011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10962721 + 90000 = 3311^2 + 300^2 .

It is a cyclic number.

It is not a de Polignac number, because 11052721 - 2⁵ = 11052689 is a prime.

It is not a weakly prime, because it can be changed into another prime (11052731) by changing a digit.

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 as a sum of consecutive naturals, namely, 5526360 + 5526361.

It is an arithmetic number, because the mean of its divisors is an integer number (5526361).

Almost surely, 2^11052721 is an apocalyptic number.

It is an amenable number.

11052721 is a deficient number, since it is larger than the sum of its proper divisors (1).

11052721 is an equidigital number, since it uses as much as digits as its factorization.

11052721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 11052721 is about 3324.5632795903. The cubic root of 11052721 is about 222.7527473342.

Adding to 11052721 its reverse (12725011), we get a palindrome (23777732).

The spelling of 11052721 in words is "eleven million, fifty-two thousand, seven hundred twenty-one".