57828109 has 2 divisors, whose sum is σ = 57828110. Its totient is φ = 57828108.

The previous prime is 57828103. The next prime is 57828119. The reversal of 57828109 is 90182875.

57828109 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., 57805609 + 22500 = 7603^2 + 150^2 .

It is a cyclic number.

It is not a de Polignac number, because 57828109 - 2⁷ = 57827981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57828103) 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, 28914054 + 28914055.

It is an arithmetic number, because the mean of its divisors is an integer number (28914055).

Almost surely, 2^57828109 is an apocalyptic number.

It is an amenable number.

57828109 is a deficient number, since it is larger than the sum of its proper divisors (1).

57828109 is an equidigital number, since it uses as much as digits as its factorization.

57828109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 57828109 is about 7604.4795351161. The cubic root of 57828109 is about 386.7048897840.

The spelling of 57828109 in words is "fifty-seven million, eight hundred twenty-eight thousand, one hundred nine".