57843943 has 2 divisors, whose sum is σ = 57843944. Its totient is φ = 57843942.

The previous prime is 57843937. The next prime is 57843977. The reversal of 57843943 is 34934875.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57843943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57843943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57843983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28921971 + 28921972.

It is an arithmetic number, because the mean of its divisors is an integer number (28921972).

Almost surely, 2^57843943 is an apocalyptic number.

57843943 is a deficient number, since it is larger than the sum of its proper divisors (1).

57843943 is an equidigital number, since it uses as much as digits as its factorization.

57843943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 43.

The square root of 57843943 is about 7605.5205607506. The cubic root of 57843943 is about 386.7401813089.

It can be divided in two parts, 578 and 43943, that added together give a square (44521 = 211²).

The spelling of 57843943 in words is "fifty-seven million, eight hundred forty-three thousand, nine hundred forty-three".