56978018 has 8 divisors (see below), whose sum is σ = 85872720. Its totient is φ = 28353780.

The previous prime is 56978003. The next prime is 56978029. The reversal of 56978018 is 81087965.

It is a happy number.

56978018 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 a self number, because there is not a number n which added to its sum of digits gives 56978018.

It is an unprimeable number.

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, 67088 + ... + 67931.

It is an arithmetic number, because the mean of its divisors is an integer number (10734090).

Almost surely, 2^56978018 is an apocalyptic number.

56978018 is a deficient number, since it is larger than the sum of its proper divisors (28894702).

56978018 is a wasteful number, since it uses less digits than its factorization.

56978018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135232.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 56978018 is about 7548.3785013737. The cubic root of 56978018 is about 384.8006343971.

It can be divided in two parts, 569 and 78018, that added together give a palindrome (78587).

The spelling of 56978018 in words is "fifty-six million, nine hundred seventy-eight thousand, eighteen".