5121511249 has 2 divisors, whose sum is σ = 5121511250. Its totient is φ = 5121511248.

The previous prime is 5121511193. The next prime is 5121511321. The reversal of 5121511249 is 9421151215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2581351249 + 2540160000 = 50807^2 + 50400^2 .

It is a cyclic number.

It is not a de Polignac number, because 5121511249 - 2²⁹ = 4584640337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5121511249.

It is not a weakly prime, because it can be changed into another prime (5121611249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2560755624 + 2560755625.

It is an arithmetic number, because the mean of its divisors is an integer number (2560755625).

Almost surely, 2^5121511249 is an apocalyptic number.

It is an amenable number.

5121511249 is a deficient number, since it is larger than the sum of its proper divisors (1).

5121511249 is an equidigital number, since it uses as much as digits as its factorization.

5121511249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 31.

The square root of 5121511249 is about 71564.7346742793. The cubic root of 5121511249 is about 1723.7173128058.

The spelling of 5121511249 in words is "five billion, one hundred twenty-one million, five hundred eleven thousand, two hundred forty-nine".