56111787 has 6 divisors (see below), whose sum is σ = 81050372. Its totient is φ = 37407852.

The previous prime is 56111779. The next prime is 56111801. The reversal of 56111787 is 78711165.

It is a happy number.

56111787 is a `hidden beast` number, since 561 + 1 + 17 + 87 = 666.

56111787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56111787 - 2³ = 56111779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56111987) 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 5 ways as a sum of consecutive naturals, for example, 3117313 + ... + 3117330.

Almost surely, 2^56111787 is an apocalyptic number.

56111787 is a deficient number, since it is larger than the sum of its proper divisors (24938585).

56111787 is a wasteful number, since it uses less digits than its factorization.

56111787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6234649 (or 6234646 counting only the distinct ones).

The product of its digits is 11760, while the sum is 36.

The square root of 56111787 is about 7490.7801329368. The cubic root of 56111787 is about 382.8406397762.

The spelling of 56111787 in words is "fifty-six million, one hundred eleven thousand, seven hundred eighty-seven".