56445240 has 64 divisors (see below), whose sum is σ = 173289600. Its totient is φ = 14700672.

The previous prime is 56445227. The next prime is 56445247. The reversal of 56445240 is 4254465.

56445240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 56445198 and 56445207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56445247) 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 15 ways as a sum of consecutive naturals, for example, 310 + ... + 10629.

It is an arithmetic number, because the mean of its divisors is an integer number (2707650).

Almost surely, 2^56445240 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 56445240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86644800).

56445240 is an abundant number, since it is smaller than the sum of its proper divisors (116844360).

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

56445240 is a wasteful number, since it uses less digits than its factorization.

56445240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10996 (or 10992 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 56445240 is about 7513.0047251416. The cubic root of 56445240 is about 383.5975057856.

The spelling of 56445240 in words is "fifty-six million, four hundred forty-five thousand, two hundred forty".