57415021717 has 2 divisors, whose sum is σ = 57415021718. Its totient is φ = 57415021716.

The previous prime is 57415021679. The next prime is 57415021721. The reversal of 57415021717 is 71712051475.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30992194116 + 26422827601 = 176046^2 + 162551^2 .

It is a cyclic number.

It is not a de Polignac number, because 57415021717 - 2¹⁵ = 57414988949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57415021717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57415021747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28707510858 + 28707510859.

It is an arithmetic number, because the mean of its divisors is an integer number (28707510859).

Almost surely, 2^57415021717 is an apocalyptic number.

It is an amenable number.

57415021717 is a deficient number, since it is larger than the sum of its proper divisors (1).

57415021717 is an equidigital number, since it uses as much as digits as its factorization.

57415021717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68600, while the sum is 40.

The spelling of 57415021717 in words is "fifty-seven billion, four hundred fifteen million, twenty-one thousand, seven hundred seventeen".