515315352157 has 2 divisors, whose sum is σ = 515315352158. Its totient is φ = 515315352156.

The previous prime is 515315352137. The next prime is 515315352161. The reversal of 515315352157 is 751253513515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 443477415481 + 71837936676 = 665941^2 + 268026^2 .

It is a cyclic number.

It is not a de Polignac number, because 515315352157 - 2¹⁹ = 515314827869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (515315352137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257657676078 + 257657676079.

It is an arithmetic number, because the mean of its divisors is an integer number (257657676079).

Almost surely, 2^515315352157 is an apocalyptic number.

It is an amenable number.

515315352157 is a deficient number, since it is larger than the sum of its proper divisors (1).

515315352157 is an equidigital number, since it uses as much as digits as its factorization.

515315352157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 393750, while the sum is 43.

The spelling of 515315352157 in words is "five hundred fifteen billion, three hundred fifteen million, three hundred fifty-two thousand, one hundred fifty-seven".