56661116 has 18 divisors (see below), whose sum is σ = 104653080. Its totient is φ = 26838792.

The previous prime is 56661113. The next prime is 56661151. The reversal of 56661116 is 61116665.

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 polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18176 + ... + 21063.

It is an arithmetic number, because the mean of its divisors is an integer number (5814060).

Almost surely, 2^56661116 is an apocalyptic number.

It is an amenable number.

56661116 is a deficient number, since it is larger than the sum of its proper divisors (47991964).

56661116 is a wasteful number, since it uses less digits than its factorization.

56661116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39281 (or 39260 counting only the distinct ones).

The product of its digits is 6480, while the sum is 32.

The square root of 56661116 is about 7527.3578365852. The cubic root of 56661116 is about 384.0859092365.

The spelling of 56661116 in words is "fifty-six million, six hundred sixty-one thousand, one hundred sixteen".