11105555 has 4 divisors (see below), whose sum is σ = 13326672. Its totient is φ = 8884440.

The previous prime is 11105551. The next prime is 11105569. The reversal of 11105555 is 55550111.

It is a happy number.

11105555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11105555 - 2² = 11105551 is a prime.

It is a Duffinian number.

11105555 is a modest number, since divided by 5555 gives 1110 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 11105555.

It is not an unprimeable number, because it can be changed into a prime (11105551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1110551 + ... + 1110560.

It is an arithmetic number, because the mean of its divisors is an integer number (3331668).

Almost surely, 2^11105555 is an apocalyptic number.

11105555 is a deficient number, since it is larger than the sum of its proper divisors (2221117).

11105555 is an equidigital number, since it uses as much as digits as its factorization.

11105555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221116.

The product of its (nonzero) digits is 625, while the sum is 23.

The square root of 11105555 is about 3332.4998124531. The cubic root of 11105555 is about 223.1071160541.

Adding to 11105555 its reverse (55550111), we get a palindrome (66655666).

The spelling of 11105555 in words is "eleven million, one hundred five thousand, five hundred fifty-five".