2551617511 has 2 divisors, whose sum is σ = 2551617512. Its totient is φ = 2551617510.

The previous prime is 2551617487. The next prime is 2551617517. The reversal of 2551617511 is 1157161552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2551617511 - 2¹⁵ = 2551584743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2551617517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275808755 + 1275808756.

It is an arithmetic number, because the mean of its divisors is an integer number (1275808756).

Almost surely, 2^2551617511 is an apocalyptic number.

2551617511 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551617511 is an equidigital number, since it uses as much as digits as its factorization.

2551617511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10500, while the sum is 34.

The square root of 2551617511 is about 50513.5378982704. The cubic root of 2551617511 is about 1366.4860148355.

The spelling of 2551617511 in words is "two billion, five hundred fifty-one million, six hundred seventeen thousand, five hundred eleven".