56904943 has 4 divisors (see below), whose sum is σ = 59899960. Its totient is φ = 53909928.

The previous prime is 56904937. The next prime is 56904971. The reversal of 56904943 is 34940965.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34940965 = 5 ⋅6988193.

It is a cyclic number.

It is not a de Polignac number, because 56904943 - 2²¹ = 54807791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56904896 and 56904905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56904973) 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, 1497480 + ... + 1497517.

It is an arithmetic number, because the mean of its divisors is an integer number (14974990).

Almost surely, 2^56904943 is an apocalyptic number.

56904943 is a deficient number, since it is larger than the sum of its proper divisors (2995017).

56904943 is a wasteful number, since it uses less digits than its factorization.

56904943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2995016.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 56904943 is about 7543.5365048497. The cubic root of 56904943 is about 384.6360601921.

The spelling of 56904943 in words is "fifty-six million, nine hundred four thousand, nine hundred forty-three".