57805109 has 2 divisors, whose sum is σ = 57805110. Its totient is φ = 57805108.

The previous prime is 57805093. The next prime is 57805127. The reversal of 57805109 is 90150875.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47914084 + 9891025 = 6922^2 + 3145^2 .

It is a cyclic number.

It is not a de Polignac number, because 57805109 - 2⁴ = 57805093 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57805129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28902554 + 28902555.

It is an arithmetic number, because the mean of its divisors is an integer number (28902555).

Almost surely, 2^57805109 is an apocalyptic number.

It is an amenable number.

57805109 is a deficient number, since it is larger than the sum of its proper divisors (1).

57805109 is an equidigital number, since it uses as much as digits as its factorization.

57805109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 35.

The square root of 57805109 is about 7602.9671181717. The cubic root of 57805109 is about 386.6536148818.

The spelling of 57805109 in words is "fifty-seven million, eight hundred five thousand, one hundred nine".