56447572 has 12 divisors (see below), whose sum is σ = 102189780. Its totient is φ = 27250496.

The previous prime is 56447557. The next prime is 56447579. The reversal of 56447572 is 27574465.

56447572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 21566736 + 34880836 = 4644^2 + 5906^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56447579) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 243193 + ... + 243424.

It is an arithmetic number, because the mean of its divisors is an integer number (8515815).

Almost surely, 2^56447572 is an apocalyptic number.

It is an amenable number.

56447572 is a deficient number, since it is larger than the sum of its proper divisors (45742208).

56447572 is a wasteful number, since it uses less digits than its factorization.

56447572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486650 (or 486648 counting only the distinct ones).

The product of its digits is 235200, while the sum is 40.

The square root of 56447572 is about 7513.1599210984. The cubic root of 56447572 is about 383.6027884104.

The spelling of 56447572 in words is "fifty-six million, four hundred forty-seven thousand, five hundred seventy-two".