11649155 has 32 divisors (see below), whose sum is σ = 17280000. Its totient is φ = 7362432.

The previous prime is 11649151. The next prime is 11649179. The reversal of 11649155 is 55194611.

It is not a de Polignac number, because 11649155 - 2² = 11649151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11649151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23096 + ... + 23594.

It is an arithmetic number, because the mean of its divisors is an integer number (540000).

Almost surely, 2^11649155 is an apocalyptic number.

11649155 is a deficient number, since it is larger than the sum of its proper divisors (5630845).

11649155 is a wasteful number, since it uses less digits than its factorization.

11649155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563.

The product of its digits is 5400, while the sum is 32.

The square root of 11649155 is about 3413.0858471477. The cubic root of 11649155 is about 226.6895365717.

The spelling of 11649155 in words is "eleven million, six hundred forty-nine thousand, one hundred fifty-five".