2545404317 has 2 divisors, whose sum is σ = 2545404318. Its totient is φ = 2545404316.

The previous prime is 2545404299. The next prime is 2545404347. The reversal of 2545404317 is 7134045452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2191550596 + 353853721 = 46814^2 + 18811^2 .

It is a cyclic number.

It is not a de Polignac number, because 2545404317 - 2²² = 2541210013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2545404347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272702158 + 1272702159.

It is an arithmetic number, because the mean of its divisors is an integer number (1272702159).

Almost surely, 2^2545404317 is an apocalyptic number.

It is an amenable number.

2545404317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545404317 is an equidigital number, since it uses as much as digits as its factorization.

2545404317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 35.

The square root of 2545404317 is about 50452.0001288353. Note that the first 3 decimals coincide. The cubic root of 2545404317 is about 1365.3759812636.

Adding to 2545404317 its reverse (7134045452), we get a palindrome (9679449769).

The spelling of 2545404317 in words is "two billion, five hundred forty-five million, four hundred four thousand, three hundred seventeen".