5121813757 has 2 divisors, whose sum is σ = 5121813758. Its totient is φ = 5121813756.

The previous prime is 5121813733. The next prime is 5121813773. The reversal of 5121813757 is 7573181215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5049665721 + 72148036 = 71061^2 + 8494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5121813757 is a prime.

It is a super-2 number, since 2×5121813757² = 52465952322788910098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5121813157) 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, 2560906878 + 2560906879.

It is an arithmetic number, because the mean of its divisors is an integer number (2560906879).

Almost surely, 2^5121813757 is an apocalyptic number.

It is an amenable number.

5121813757 is a deficient number, since it is larger than the sum of its proper divisors (1).

5121813757 is an equidigital number, since it uses as much as digits as its factorization.

5121813757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58800, while the sum is 40.

The square root of 5121813757 is about 71566.8481700850. The cubic root of 5121813757 is about 1723.7512499248.

The spelling of 5121813757 in words is "five billion, one hundred twenty-one million, eight hundred thirteen thousand, seven hundred fifty-seven".