11500056 has 40 divisors (see below), whose sum is σ = 32212620. Its totient is φ = 3833136.

The previous prime is 11500051. The next prime is 11500057. The reversal of 11500056 is 65000511.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11500051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8226 + ... + 9521.

Almost surely, 2^11500056 is an apocalyptic number.

It is an amenable number.

11500056 is an abundant number, since it is smaller than the sum of its proper divisors (20712564).

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

11500056 is a wasteful number, since it uses less digits than its factorization.

11500056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17765 (or 17752 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 11500056 is about 3391.1732483021. The cubic root of 11500056 is about 225.7182381557.

Adding to 11500056 its reverse (65000511), we get a palindrome (76500567).

The spelling of 11500056 in words is "eleven million, five hundred thousand, fifty-six".