11548721 has 2 divisors, whose sum is σ = 11548722. Its totient is φ = 11548720.

The previous prime is 11548717. The next prime is 11548739. The reversal of 11548721 is 12784511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10758400 + 790321 = 3280^2 + 889^2 .

It is a cyclic number.

It is not a de Polignac number, because 11548721 - 2² = 11548717 is a prime.

It is not a weakly prime, because it can be changed into another prime (11548741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5774360 + 5774361.

It is an arithmetic number, because the mean of its divisors is an integer number (5774361).

Almost surely, 2^11548721 is an apocalyptic number.

It is an amenable number.

11548721 is a deficient number, since it is larger than the sum of its proper divisors (1).

11548721 is an equidigital number, since it uses as much as digits as its factorization.

11548721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2240, while the sum is 29.

The square root of 11548721 is about 3398.3409187426. The cubic root of 11548721 is about 226.0361821100.

The spelling of 11548721 in words is "eleven million, five hundred forty-eight thousand, seven hundred twenty-one".