2551401317 has 2 divisors, whose sum is σ = 2551401318. Its totient is φ = 2551401316.

The previous prime is 2551401313. The next prime is 2551401323. The reversal of 2551401317 is 7131041552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2435817316 + 115584001 = 49354^2 + 10751^2 .

It is a cyclic number.

It is not a de Polignac number, because 2551401317 - 2² = 2551401313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2551401317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2551401313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275700658 + 1275700659.

It is an arithmetic number, because the mean of its divisors is an integer number (1275700659).

Almost surely, 2^2551401317 is an apocalyptic number.

It is an amenable number.

2551401317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551401317 is an equidigital number, since it uses as much as digits as its factorization.

2551401317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 2551401317 is about 50511.3978919610. The cubic root of 2551401317 is about 1366.4474204379.

Adding to 2551401317 its reverse (7131041552), we get a palindrome (9682442869).

The spelling of 2551401317 in words is "two billion, five hundred fifty-one million, four hundred one thousand, three hundred seventeen".