56447216 has 30 divisors (see below), whose sum is σ = 127224000. Its totient is φ = 24191328.

The previous prime is 56447207. The next prime is 56447227. The reversal of 56447216 is 61274465.

56447216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 5 ways as a sum of consecutive naturals, for example, 35216 + ... + 36783.

It is an arithmetic number, because the mean of its divisors is an integer number (4240800).

Almost surely, 2^56447216 is an apocalyptic number.

56447216 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

56447216 is an abundant number, since it is smaller than the sum of its proper divisors (70776784).

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

56447216 is a wasteful number, since it uses less digits than its factorization.

56447216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72021 (or 72008 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 56447216 is about 7513.1362292987. The cubic root of 56447216 is about 383.6019819813.

The spelling of 56447216 in words is "fifty-six million, four hundred forty-seven thousand, two hundred sixteen".