11166155 has 64 divisors (see below), whose sum is σ = 18966528. Its totient is φ = 6082560.

The previous prime is 11166151. The next prime is 11166173. The reversal of 11166155 is 55166111.

11166155 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11166155 - 2² = 11166151 is a prime.

11166155 is strictly pandigital in base 8.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (11166151) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 115067 + ... + 115163.

It is an arithmetic number, because the mean of its divisors is an integer number (296352).

Almost surely, 2^11166155 is an apocalyptic number.

11166155 is a deficient number, since it is larger than the sum of its proper divisors (7800373).

11166155 is a wasteful number, since it uses less digits than its factorization.

11166155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156.

The product of its digits is 900, while the sum is 26.

The square root of 11166155 is about 3341.5797162420. The cubic root of 11166155 is about 223.5121918121.

It can be divided in two parts, 11166 and 155, that multiplied together give a triangular number (1730730 = T₁₈₆₀).

The spelling of 11166155 in words is "eleven million, one hundred sixty-six thousand, one hundred fifty-five".