2551405117 has 2 divisors, whose sum is σ = 2551405118. Its totient is φ = 2551405116.

The previous prime is 2551405081. The next prime is 2551405127. The reversal of 2551405117 is 7115041552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2550856036 + 549081 = 50506^2 + 741^2 .

It is a cyclic number.

It is not a de Polignac number, because 2551405117 - 2¹¹ = 2551403069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2551405127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275702558 + 1275702559.

It is an arithmetic number, because the mean of its divisors is an integer number (1275702559).

Almost surely, 2^2551405117 is an apocalyptic number.

It is an amenable number.

2551405117 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551405117 is an equidigital number, since it uses as much as digits as its factorization.

2551405117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7000, while the sum is 31.

The square root of 2551405117 is about 50511.4355072196. The cubic root of 2551405117 is about 1366.4480988230.

Adding to 2551405117 its reverse (7115041552), we get a palindrome (9666446669).

The spelling of 2551405117 in words is "two billion, five hundred fifty-one million, four hundred five thousand, one hundred seventeen".