56440303 has 4 divisors (see below), whose sum is σ = 56727000. Its totient is φ = 56153608.

The previous prime is 56440291. The next prime is 56440333. The reversal of 56440303 is 30304465.

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

It is a cyclic number.

It is not a de Polignac number, because 56440303 - 2⁵ = 56440271 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 (56440333) 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, 143053 + ... + 143446.

It is an arithmetic number, because the mean of its divisors is an integer number (14181750).

Almost surely, 2^56440303 is an apocalyptic number.

56440303 is a deficient number, since it is larger than the sum of its proper divisors (286697).

56440303 is a wasteful number, since it uses less digits than its factorization.

56440303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286696.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 56440303 is about 7512.6761543407. The cubic root of 56440303 is about 383.5863216356.

Adding to 56440303 its reverse (30304465), we get a palindrome (86744768).

The spelling of 56440303 in words is "fifty-six million, four hundred forty thousand, three hundred three".