11000155 has 4 divisors (see below), whose sum is σ = 13200192. Its totient is φ = 8800120.

The previous prime is 11000149. The next prime is 11000159. The reversal of 11000155 is 55100011.

11000155 is digitally balanced in base 3, 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 11000155 - 2⁷ = 11000027 is a prime.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11000159) 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, 1100011 + ... + 1100020.

It is an arithmetic number, because the mean of its divisors is an integer number (3300048).

Almost surely, 2^11000155 is an apocalyptic number.

11000155 is a deficient number, since it is larger than the sum of its proper divisors (2200037).

11000155 is an equidigital number, since it uses as much as digits as its factorization.

11000155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200036.

The product of its (nonzero) digits is 25, while the sum is 13.

The square root of 11000155 is about 3316.6481574023. The cubic root of 11000155 is about 222.3990536487.

Adding to 11000155 its reverse (55100011), we get a palindrome (66100166).

The spelling of 11000155 in words is "eleven million, one hundred fifty-five", and thus it is an aban number.