56217742 has 16 divisors (see below), whose sum is σ = 102042720. Its totient is φ = 22675968.

The previous prime is 56217719. The next prime is 56217767. The reversal of 56217742 is 24771265.

56217742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 56217698 and 56217707.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 117867 + ... + 118342.

It is an arithmetic number, because the mean of its divisors is an integer number (6377670).

Almost surely, 2^56217742 is an apocalyptic number.

56217742 is a deficient number, since it is larger than the sum of its proper divisors (45824978).

56217742 is a wasteful number, since it uses less digits than its factorization.

56217742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236235.

The product of its digits is 23520, while the sum is 34.

The square root of 56217742 is about 7497.8491582587. The cubic root of 56217742 is about 383.0814589033.

The spelling of 56217742 in words is "fifty-six million, two hundred seventeen thousand, seven hundred forty-two".