5115313081 has 2 divisors, whose sum is σ = 5115313082. Its totient is φ = 5115313080.

The previous prime is 5115313037. The next prime is 5115313117. The reversal of 5115313081 is 1803135115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3126599056 + 1988714025 = 55916^2 + 44595^2 .

It is a cyclic number.

It is not a de Polignac number, because 5115313081 - 2²¹ = 5113215929 is a prime.

It is a super-2 number, since 2×5115313081² = 52332855833299425122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5115313001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2557656540 + 2557656541.

It is an arithmetic number, because the mean of its divisors is an integer number (2557656541).

Almost surely, 2^5115313081 is an apocalyptic number.

It is an amenable number.

5115313081 is a deficient number, since it is larger than the sum of its proper divisors (1).

5115313081 is an equidigital number, since it uses as much as digits as its factorization.

5115313081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 5115313081 is about 71521.4169392637. The cubic root of 5115313081 is about 1723.0216716281.

Adding to 5115313081 its reverse (1803135115), we get a palindrome (6918448196).

The spelling of 5115313081 in words is "five billion, one hundred fifteen million, three hundred thirteen thousand, eighty-one".