11448721 has 2 divisors, whose sum is σ = 11448722. Its totient is φ = 11448720.

The previous prime is 11448719. The next prime is 11448737. The reversal of 11448721 is 12784411.

11448721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7700625 + 3748096 = 2775^2 + 1936^2 .

It is a cyclic number.

It is not a de Polignac number, because 11448721 - 2¹ = 11448719 is a prime.

Together with 11448719, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11448721.

It is not a weakly prime, because it can be changed into another prime (11448791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5724360 + 5724361.

It is an arithmetic number, because the mean of its divisors is an integer number (5724361).

Almost surely, 2^11448721 is an apocalyptic number.

It is an amenable number.

11448721 is a deficient number, since it is larger than the sum of its proper divisors (1).

11448721 is an equidigital number, since it uses as much as digits as its factorization.

11448721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1792, while the sum is 28.

The square root of 11448721 is about 3383.5958683034. The cubic root of 11448721 is about 225.3818766040.

The spelling of 11448721 in words is "eleven million, four hundred forty-eight thousand, seven hundred twenty-one".