57545239 has 2 divisors, whose sum is σ = 57545240. Its totient is φ = 57545238.

The previous prime is 57545219. The next prime is 57545261. The reversal of 57545239 is 93254575.

57545239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57545239 - 2¹³ = 57537047 is a prime.

It is a super-2 number, since 2×57545239² = 6622909063134242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57545219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28772619 + 28772620.

It is an arithmetic number, because the mean of its divisors is an integer number (28772620).

Almost surely, 2^57545239 is an apocalyptic number.

57545239 is a deficient number, since it is larger than the sum of its proper divisors (1).

57545239 is an equidigital number, since it uses as much as digits as its factorization.

57545239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 189000, while the sum is 40.

The square root of 57545239 is about 7585.8578288813. The cubic root of 57545239 is about 386.0733280827.

The spelling of 57545239 in words is "fifty-seven million, five hundred forty-five thousand, two hundred thirty-nine".