517115256241 has 2 divisors, whose sum is σ = 517115256242. Its totient is φ = 517115256240.

The previous prime is 517115256199. The next prime is 517115256311. The reversal of 517115256241 is 142652511715.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 410624640000 + 106490616241 = 640800^2 + 326329^2 .

It is a cyclic number.

It is not a de Polignac number, because 517115256241 - 2¹¹ = 517115254193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 517115256194 and 517115256203.

It is not a weakly prime, because it can be changed into another prime (517115250241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258557628120 + 258557628121.

It is an arithmetic number, because the mean of its divisors is an integer number (258557628121).

Almost surely, 2^517115256241 is an apocalyptic number.

It is an amenable number.

517115256241 is a deficient number, since it is larger than the sum of its proper divisors (1).

517115256241 is an equidigital number, since it uses as much as digits as its factorization.

517115256241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84000, while the sum is 40.

Adding to 517115256241 its reverse (142652511715), we get a palindrome (659767767956).

The spelling of 517115256241 in words is "five hundred seventeen billion, one hundred fifteen million, two hundred fifty-six thousand, two hundred forty-one".