56217044 has 12 divisors (see below), whose sum is σ = 105947604. Its totient is φ = 25946304.

The previous prime is 56217041. The next prime is 56217059. The reversal of 56217044 is 44071265.

It can be written as a sum of positive squares in 2 ways, for example, as 27164944 + 29052100 = 5212^2 + 5390^2 .

It is a junction number, because it is equal to n+sod(n) for n = 56216998 and 56217016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56217041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540497 + ... + 540600.

It is an arithmetic number, because the mean of its divisors is an integer number (8828967).

Almost surely, 2^56217044 is an apocalyptic number.

It is an amenable number.

56217044 is a deficient number, since it is larger than the sum of its proper divisors (49730560).

56217044 is a wasteful number, since it uses less digits than its factorization.

56217044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081114 (or 1081112 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 56217044 is about 7497.8026114322. The cubic root of 56217044 is about 383.0798734491.

The spelling of 56217044 in words is "fifty-six million, two hundred seventeen thousand, forty-four".