57303749 has 2 divisors, whose sum is σ = 57303750. Its totient is φ = 57303748.

The previous prime is 57303737. The next prime is 57303767. The reversal of 57303749 is 94730375.

57303749 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 can be written as a sum of positive squares in only one way, i.e., 50836900 + 6466849 = 7130^2 + 2543^2 .

It is a cyclic number.

It is not a de Polignac number, because 57303749 - 2⁴ = 57303733 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57303709) 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, 28651874 + 28651875.

It is an arithmetic number, because the mean of its divisors is an integer number (28651875).

Almost surely, 2^57303749 is an apocalyptic number.

It is an amenable number.

57303749 is a deficient number, since it is larger than the sum of its proper divisors (1).

57303749 is an equidigital number, since it uses as much as digits as its factorization.

57303749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79380, while the sum is 38.

The square root of 57303749 is about 7569.9239758402. The cubic root of 57303749 is about 385.5325154832.

The spelling of 57303749 in words is "fifty-seven million, three hundred three thousand, seven hundred forty-nine".