57039643 has 2 divisors, whose sum is σ = 57039644. Its totient is φ = 57039642.

The previous prime is 57039611. The next prime is 57039677. The reversal of 57039643 is 34693075.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57039643 - 2⁵ = 57039611 is a prime.

It is not a weakly prime, because it can be changed into another prime (57039943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28519821 + 28519822.

It is an arithmetic number, because the mean of its divisors is an integer number (28519822).

Almost surely, 2^57039643 is an apocalyptic number.

57039643 is a deficient number, since it is larger than the sum of its proper divisors (1).

57039643 is an equidigital number, since it uses as much as digits as its factorization.

57039643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 57039643 is about 7552.4594007515. The cubic root of 57039643 is about 384.9393124110.

The spelling of 57039643 in words is "fifty-seven million, thirty-nine thousand, six hundred forty-three".