517415524421 has 2 divisors, whose sum is σ = 517415524422. Its totient is φ = 517415524420.

The previous prime is 517415524397. The next prime is 517415524441. The reversal of 517415524421 is 124425514715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 377622540100 + 139792984321 = 614510^2 + 373889^2 .

It is a cyclic number.

It is not a de Polignac number, because 517415524421 - 2¹⁰ = 517415523397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (517415524441) 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, 258707762210 + 258707762211.

It is an arithmetic number, because the mean of its divisors is an integer number (258707762211).

Almost surely, 2^517415524421 is an apocalyptic number.

It is an amenable number.

517415524421 is a deficient number, since it is larger than the sum of its proper divisors (1).

517415524421 is an equidigital number, since it uses as much as digits as its factorization.

517415524421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 224000, while the sum is 41.

The spelling of 517415524421 in words is "five hundred seventeen billion, four hundred fifteen million, five hundred twenty-four thousand, four hundred twenty-one".