56220445 has 8 divisors (see below), whose sum is σ = 71433144. Its totient is φ = 42330624.

The previous prime is 56220443. The next prime is 56220491. The reversal of 56220445 is 54402265.

It can be written as a sum of positive squares in 4 ways, for example, as 1267876 + 54952569 = 1126^2 + 7413^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 56220445 - 2¹ = 56220443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56220443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330624 + ... + 330793.

It is an arithmetic number, because the mean of its divisors is an integer number (8929143).

Almost surely, 2^56220445 is an apocalyptic number.

It is an amenable number.

56220445 is a deficient number, since it is larger than the sum of its proper divisors (15212699).

56220445 is a wasteful number, since it uses less digits than its factorization.

56220445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661439.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 56220445 is about 7498.0294077844. The cubic root of 56220445 is about 383.0875984395.

It can be divided in two parts, 56220 and 445, that added together give a palindrome (56665).

The spelling of 56220445 in words is "fifty-six million, two hundred twenty thousand, four hundred forty-five".