11156055 has 16 divisors (see below), whose sum is σ = 18333024. Its totient is φ = 5788800.

The previous prime is 11156051. The next prime is 11156071. The reversal of 11156055 is 55065111.

11156055 = 531² + 532² + ... + 567².

It is not a de Polignac number, because 11156055 - 2² = 11156051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11156051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9496 + ... + 10605.

It is an arithmetic number, because the mean of its divisors is an integer number (1145814).

Almost surely, 2^11156055 is an apocalyptic number.

11156055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11156055 is a deficient number, since it is larger than the sum of its proper divisors (7176969).

11156055 is a wasteful number, since it uses less digits than its factorization.

11156055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20146.

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 11156055 is about 3340.0681130779. The cubic root of 11156055 is about 223.4447811375. Note that the first 3 decimals are identical.

The spelling of 11156055 in words is "eleven million, one hundred fifty-six thousand, fifty-five".