11289165 has 32 divisors (see below), whose sum is σ = 18800640. Its totient is φ = 5780544.

The previous prime is 11289137. The next prime is 11289167. The reversal of 11289165 is 56198211.

11289165 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11289165 - 2⁶ = 11289101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11289167) 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, 47116 + ... + 47354.

It is an arithmetic number, because the mean of its divisors is an integer number (587520).

Almost surely, 2^11289165 is an apocalyptic number.

11289165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11289165 is a deficient number, since it is larger than the sum of its proper divisors (7511475).

11289165 is a wasteful number, since it uses less digits than its factorization.

11289165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361.

The product of its digits is 4320, while the sum is 33.

The square root of 11289165 is about 3359.9352672336. The cubic root of 11289165 is about 224.3299572322.

The spelling of 11289165 in words is "eleven million, two hundred eighty-nine thousand, one hundred sixty-five".