11056181 has 8 divisors (see below), whose sum is σ = 11553024. Its totient is φ = 10568160.

The previous prime is 11056147. The next prime is 11056193. The reversal of 11056181 is 18165011.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11056181 - 2¹⁸ = 10794037 is a prime.

It is a super-3 number, since 3×11056181³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11056121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425 + ... + 4721.

It is an arithmetic number, because the mean of its divisors is an integer number (1444128).

Almost surely, 2^11056181 is an apocalyptic number.

It is an amenable number.

11056181 is a deficient number, since it is larger than the sum of its proper divisors (496843).

11056181 is an equidigital number, since it uses as much as digits as its factorization.

11056181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4411.

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

The square root of 11056181 is about 3325.0836079714. The cubic root of 11056181 is about 222.7759887935.

The spelling of 11056181 in words is "eleven million, fifty-six thousand, one hundred eighty-one".