56646943 has 2 divisors, whose sum is σ = 56646944. Its totient is φ = 56646942.

The previous prime is 56646937. The next prime is 56646991. The reversal of 56646943 is 34964665.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56646943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56646943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56646913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28323471 + 28323472.

It is an arithmetic number, because the mean of its divisors is an integer number (28323472).

Almost surely, 2^56646943 is an apocalyptic number.

56646943 is a deficient number, since it is larger than the sum of its proper divisors (1).

56646943 is an equidigital number, since it uses as much as digits as its factorization.

56646943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 43.

The square root of 56646943 is about 7526.4163451141. The cubic root of 56646943 is about 384.0538819609.

The spelling of 56646943 in words is "fifty-six million, six hundred forty-six thousand, nine hundred forty-three".