56989978 has 8 divisors (see below), whose sum is σ = 86137920. Its totient is φ = 28277340.

The previous prime is 56989973. The next prime is 56989979. The reversal of 56989978 is 87998965.

56989978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (56989973) 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 3 ways as a sum of consecutive naturals, for example, 108498 + ... + 109021.

It is an arithmetic number, because the mean of its divisors is an integer number (10767240).

Almost surely, 2^56989978 is an apocalyptic number.

56989978 is a deficient number, since it is larger than the sum of its proper divisors (29147942).

56989978 is a wasteful number, since it uses less digits than its factorization.

56989978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217652.

The product of its digits is 9797760, while the sum is 61.

The square root of 56989978 is about 7549.1706829294. The cubic root of 56989978 is about 384.8275564382.

The spelling of 56989978 in words is "fifty-six million, nine hundred eighty-nine thousand, nine hundred seventy-eight".