11187055 has 24 divisors (see below), whose sum is σ = 15134832. Its totient is φ = 7937600.

The previous prime is 11187053. The next prime is 11187073. The reversal of 11187055 is 55078111.

It is not a de Polignac number, because 11187055 - 2¹ = 11187053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11187053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 272835 + ... + 272875.

It is an arithmetic number, because the mean of its divisors is an integer number (630618).

Almost surely, 2^11187055 is an apocalyptic number.

11187055 is a deficient number, since it is larger than the sum of its proper divisors (3947777).

11187055 is an frugal number, since it uses more digits than its factorization.

11187055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 28.

The square root of 11187055 is about 3344.7055176801. The cubic root of 11187055 is about 223.6515562069.

The spelling of 11187055 in words is "eleven million, one hundred eighty-seven thousand, fifty-five".