56909943 has 6 divisors (see below), whose sum is σ = 82203264. Its totient is φ = 37939956.

The previous prime is 56909933. The next prime is 56909947. The reversal of 56909943 is 34990965.

It is a happy number.

56909943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56909943 - 2⁹ = 56909431 is a prime.

It is a super-2 number, since 2×56909943² = 6477483224526498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56909947) 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 5 ways as a sum of consecutive naturals, for example, 3161655 + ... + 3161672.

It is an arithmetic number, because the mean of its divisors is an integer number (13700544).

Almost surely, 2^56909943 is an apocalyptic number.

56909943 is a deficient number, since it is larger than the sum of its proper divisors (25293321).

56909943 is a wasteful number, since it uses less digits than its factorization.

56909943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6323333 (or 6323330 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 45.

The square root of 56909943 is about 7543.8679071150. The cubic root of 56909943 is about 384.6473253176.

The spelling of 56909943 in words is "fifty-six million, nine hundred nine thousand, nine hundred forty-three".