1155165 has 16 divisors (see below), whose sum is σ = 2016576. Its totient is φ = 560000.

The previous prime is 1155151. The next prime is 1155169. The reversal of 1155165 is 5615511.

It is not a de Polignac number, because 1155165 - 2⁴ = 1155149 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3336 + ... + 3665.

It is an arithmetic number, because the mean of its divisors is an integer number (126036).

2^1155165 is an apocalyptic number.

1155165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1155165 is a deficient number, since it is larger than the sum of its proper divisors (861411).

1155165 is a wasteful number, since it uses less digits than its factorization.

1155165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7020.

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

The square root of 1155165 is about 1074.7860252162. The cubic root of 1155165 is about 104.9255708362.

The spelling of 1155165 in words is "one million, one hundred fifty-five thousand, one hundred sixty-five".