5256515137 has 2 divisors, whose sum is σ = 5256515138. Its totient is φ = 5256515136.

The previous prime is 5256515113. The next prime is 5256515207. The reversal of 5256515137 is 7315156525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2976357136 + 2280158001 = 54556^2 + 47751^2 .

It is a cyclic number.

It is not a de Polignac number, because 5256515137 - 2⁷ = 5256515009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5256515137.

It is not a weakly prime, because it can be changed into another prime (5256516137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2628257568 + 2628257569.

It is an arithmetic number, because the mean of its divisors is an integer number (2628257569).

Almost surely, 2^5256515137 is an apocalyptic number.

It is an amenable number.

5256515137 is a deficient number, since it is larger than the sum of its proper divisors (1).

5256515137 is an equidigital number, since it uses as much as digits as its factorization.

5256515137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157500, while the sum is 40.

The square root of 5256515137 is about 72501.8285079763. The cubic root of 5256515137 is about 1738.7319709575.

The spelling of 5256515137 in words is "five billion, two hundred fifty-six million, five hundred fifteen thousand, one hundred thirty-seven".