2057185717 has 2 divisors, whose sum is σ = 2057185718. Its totient is φ = 2057185716.

The previous prime is 2057185687. The next prime is 2057185763. The reversal of 2057185717 is 7175817502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1521078001 + 536107716 = 39001^2 + 23154^2 .

It is a cyclic number.

It is not a de Polignac number, because 2057185717 - 2¹¹ = 2057183669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2057185787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028592858 + 1028592859.

It is an arithmetic number, because the mean of its divisors is an integer number (1028592859).

Almost surely, 2^2057185717 is an apocalyptic number.

It is an amenable number.

2057185717 is a deficient number, since it is larger than the sum of its proper divisors (1).

2057185717 is an equidigital number, since it uses as much as digits as its factorization.

2057185717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 137200, while the sum is 43.

The square root of 2057185717 is about 45356.2092441597. The cubic root of 2057185717 is about 1271.8166320346.

The spelling of 2057185717 in words is "two billion, fifty-seven million, one hundred eighty-five thousand, seven hundred seventeen".