2551123511 has 2 divisors, whose sum is σ = 2551123512. Its totient is φ = 2551123510.

The previous prime is 2551123493. The next prime is 2551123543. The reversal of 2551123511 is 1153211552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2551123511 - 2⁶ = 2551123447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2551123111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275561755 + 1275561756.

It is an arithmetic number, because the mean of its divisors is an integer number (1275561756).

Almost surely, 2^2551123511 is an apocalyptic number.

2551123511 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551123511 is an equidigital number, since it uses as much as digits as its factorization.

2551123511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1500, while the sum is 26.

The square root of 2551123511 is about 50508.6478833081. The cubic root of 2551123511 is about 1366.3978240236.

The spelling of 2551123511 in words is "two billion, five hundred fifty-one million, one hundred twenty-three thousand, five hundred eleven".