57840043 has 2 divisors, whose sum is σ = 57840044. Its totient is φ = 57840042.

The previous prime is 57840023. The next prime is 57840049. The reversal of 57840043 is 34004875.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57840043 - 2⁵ = 57840011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57839987 and 57840014.

It is not a weakly prime, because it can be changed into another prime (57840049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28920021 + 28920022.

It is an arithmetic number, because the mean of its divisors is an integer number (28920022).

Almost surely, 2^57840043 is an apocalyptic number.

57840043 is a deficient number, since it is larger than the sum of its proper divisors (1).

57840043 is an equidigital number, since it uses as much as digits as its factorization.

57840043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 57840043 is about 7605.2641637224. The cubic root of 57840043 is about 386.7314894129.

The spelling of 57840043 in words is "fifty-seven million, eight hundred forty thousand, forty-three".