11055571 has 6 divisors (see below), whose sum is σ = 11557700. Its totient is φ = 10574388.

The previous prime is 11055557. The next prime is 11055599. The reversal of 11055571 is 17555011.

11055571 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11055571 - 2⁹ = 11055059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11055071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9921 + ... + 10978.

Almost surely, 2^11055571 is an apocalyptic number.

11055571 is a deficient number, since it is larger than the sum of its proper divisors (502129).

11055571 is an equidigital number, since it uses as much as digits as its factorization.

11055571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20945 (or 20922 counting only the distinct ones).

The product of its (nonzero) digits is 875, while the sum is 25.

The square root of 11055571 is about 3324.9918796893. The cubic root of 11055571 is about 222.7718916629.

The spelling of 11055571 in words is "eleven million, fifty-five thousand, five hundred seventy-one".