2545417717 has 2 divisors, whose sum is σ = 2545417718. Its totient is φ = 2545417716.

The previous prime is 2545417687. The next prime is 2545417729. The reversal of 2545417717 is 7177145452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1381311556 + 1164106161 = 37166^2 + 34119^2 .

It is a cyclic number.

It is not a de Polignac number, because 2545417717 - 2¹⁵ = 2545384949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2545417817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272708858 + 1272708859.

It is an arithmetic number, because the mean of its divisors is an integer number (1272708859).

Almost surely, 2^2545417717 is an apocalyptic number.

It is an amenable number.

2545417717 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545417717 is an equidigital number, since it uses as much as digits as its factorization.

2545417717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 274400, while the sum is 43.

The square root of 2545417717 is about 50452.1329281528. The cubic root of 2545417717 is about 1365.3783772165.

The spelling of 2545417717 in words is "two billion, five hundred forty-five million, four hundred seventeen thousand, seven hundred seventeen".