56440806 has 16 divisors (see below), whose sum is σ = 113356800. Its totient is φ = 18734408.

The previous prime is 56440793. The next prime is 56440819. The reversal of 56440806 is 60804465.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (56440793) and next prime (56440819).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 18246 + ... + 21113.

It is an arithmetic number, because the mean of its divisors is an integer number (7084800).

Almost surely, 2^56440806 is an apocalyptic number.

56440806 is an abundant number, since it is smaller than the sum of its proper divisors (56915994).

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

56440806 is a wasteful number, since it uses less digits than its factorization.

56440806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39603.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 56440806 is about 7512.7096310186. The cubic root of 56440806 is about 383.5874611484.

The spelling of 56440806 in words is "fifty-six million, four hundred forty thousand, eight hundred six".