11161085 has 32 divisors (see below), whose sum is σ = 15482880. Its totient is φ = 7660800.

The previous prime is 11161081. The next prime is 11161091. The reversal of 11161085 is 58016111.

It is a happy number.

It is not a de Polignac number, because 11161085 - 2² = 11161081 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11161085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11161081) 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, 58340 + ... + 58530.

It is an arithmetic number, because the mean of its divisors is an integer number (483840).

Almost surely, 2^11161085 is an apocalyptic number.

It is an amenable number.

11161085 is a deficient number, since it is larger than the sum of its proper divisors (4321795).

11161085 is a wasteful number, since it uses less digits than its factorization.

11161085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269.

The product of its (nonzero) digits is 240, while the sum is 23.

The square root of 11161085 is about 3340.8210068784. The cubic root of 11161085 is about 223.4783580717.

Adding to 11161085 its reverse (58016111), we get a palindrome (69177196).

The spelling of 11161085 in words is "eleven million, one hundred sixty-one thousand, eighty-five".