56443903 has 4 divisors (see below), whose sum is σ = 56482488. Its totient is φ = 56405320.

The previous prime is 56443861. The next prime is 56443931. The reversal of 56443903 is 30934465.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56443903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56443973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17008 + ... + 20053.

It is an arithmetic number, because the mean of its divisors is an integer number (14120622).

Almost surely, 2^56443903 is an apocalyptic number.

56443903 is a deficient number, since it is larger than the sum of its proper divisors (38585).

56443903 is a wasteful number, since it uses less digits than its factorization.

56443903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38584.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 56443903 is about 7512.9157455678. The cubic root of 56443903 is about 383.5944770453.

The spelling of 56443903 in words is "fifty-six million, four hundred forty-three thousand, nine hundred three".