56671943 has 2 divisors, whose sum is σ = 56671944. Its totient is φ = 56671942.

The previous prime is 56671921. The next prime is 56671949. The reversal of 56671943 is 34917665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56671943 - 2⁸ = 56671687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56671943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56671949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28335971 + 28335972.

It is an arithmetic number, because the mean of its divisors is an integer number (28335972).

Almost surely, 2^56671943 is an apocalyptic number.

56671943 is a deficient number, since it is larger than the sum of its proper divisors (1).

56671943 is an equidigital number, since it uses as much as digits as its factorization.

56671943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 41.

The square root of 56671943 is about 7528.0769788838. The cubic root of 56671943 is about 384.1103718286.

The spelling of 56671943 in words is "fifty-six million, six hundred seventy-one thousand, nine hundred forty-three".