57428513 has 2 divisors, whose sum is σ = 57428514. Its totient is φ = 57428512.

The previous prime is 57428491. The next prime is 57428537. The reversal of 57428513 is 31582475.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54582544 + 2845969 = 7388^2 + 1687^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57428513 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (57428573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28714256 + 28714257.

It is an arithmetic number, because the mean of its divisors is an integer number (28714257).

Almost surely, 2^57428513 is an apocalyptic number.

It is an amenable number.

57428513 is a deficient number, since it is larger than the sum of its proper divisors (1).

57428513 is an equidigital number, since it uses as much as digits as its factorization.

57428513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 35.

The square root of 57428513 is about 7578.1602648664. The cubic root of 57428513 is about 385.8121115709.

The spelling of 57428513 in words is "fifty-seven million, four hundred twenty-eight thousand, five hundred thirteen".