56661112 has 16 divisors (see below), whose sum is σ = 107520840. Its totient is φ = 27988896.

The previous prime is 56661109. The next prime is 56661113. The reversal of 56661112 is 21116665.

It is a super-2 number, since 2×56661112² = 6420963226153088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56661113) 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 3 ways as a sum of consecutive naturals, for example, 42003 + ... + 43330.

Almost surely, 2^56661112 is an apocalyptic number.

It is an amenable number.

56661112 is a deficient number, since it is larger than the sum of its proper divisors (50859728).

56661112 is a wasteful number, since it uses less digits than its factorization.

56661112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85422 (or 85418 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 56661112 is about 7527.3575708877. The cubic root of 56661112 is about 384.0859001983.

Adding to 56661112 its reverse (21116665), we get a palindrome (77777777).

The spelling of 56661112 in words is "fifty-six million, six hundred sixty-one thousand, one hundred twelve".