57493 has 2 divisors, whose sum is σ = 57494. Its totient is φ = 57492.

The previous prime is 57487. The next prime is 57503. The reversal of 57493 is 39475.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47089 + 10404 = 217^2 + 102^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28746 + 28747.

It is an arithmetic number, because the mean of its divisors is an integer number (28747).

2⁵⁷⁴⁹³ is an apocalyptic number.

It is an amenable number.

57493 is a deficient number, since it is larger than the sum of its proper divisors (1).

57493 is an equidigital number, since it uses as much as digits as its factorization.

57493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 28.

The square root of 57493 is about 239.7769797124. The cubic root of 57493 is about 38.5956468195.

The spelling of 57493 in words is "fifty-seven thousand, four hundred ninety-three".