11181056 has 44 divisors (see below), whose sum is σ = 22844520. Its totient is φ = 5468160.

The previous prime is 11181029. The next prime is 11181061. The reversal of 11181056 is 65018111.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62375 + ... + 62553.

Almost surely, 2^11181056 is an apocalyptic number.

11181056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11181056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11422260).

11181056 is an abundant number, since it is smaller than the sum of its proper divisors (11663464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11181056 is an equidigital number, since it uses as much as digits as its factorization.

11181056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 242 counting only the distinct ones).

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

The square root of 11181056 is about 3343.8086069630. The cubic root of 11181056 is about 223.6115717314.

Adding to 11181056 its reverse (65018111), we get a palindrome (76199167).

It can be divided in two parts, 1118105 and 6, that added together give a palindrome (1118111).

The spelling of 11181056 in words is "eleven million, one hundred eighty-one thousand, fifty-six".