56081784 has 64 divisors (see below), whose sum is σ = 154944000. Its totient is φ = 16773120.

The previous prime is 56081783. The next prime is 56081819. The reversal of 56081784 is 48718065.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56081783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19512 + ... + 22200.

It is an arithmetic number, because the mean of its divisors is an integer number (2421000).

Almost surely, 2^56081784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56081784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77472000).

56081784 is an abundant number, since it is smaller than the sum of its proper divisors (98862216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56081784 is a wasteful number, since it uses less digits than its factorization.

56081784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2788 (or 2784 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 56081784 is about 7488.7772032555. Note that the first 3 decimals coincide. The cubic root of 56081784 is about 382.7723925850.

It can be divided in two parts, 56081 and 784, that added together give a palindrome (56865).

The spelling of 56081784 in words is "fifty-six million, eighty-one thousand, seven hundred eighty-four".