517342543 has 2 divisors, whose sum is σ = 517342544. Its totient is φ = 517342542.

The previous prime is 517342541. The next prime is 517342597. The reversal of 517342543 is 345243715.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 517342543 - 2¹ = 517342541 is a prime.

Together with 517342541, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 517342499 and 517342508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (517342541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258671271 + 258671272.

It is an arithmetic number, because the mean of its divisors is an integer number (258671272).

Almost surely, 2^517342543 is an apocalyptic number.

517342543 is a deficient number, since it is larger than the sum of its proper divisors (1).

517342543 is an equidigital number, since it uses as much as digits as its factorization.

517342543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 34.

The square root of 517342543 is about 22745.1652664913. The cubic root of 517342543 is about 802.7729517969.

The spelling of 517342543 in words is "five hundred seventeen million, three hundred forty-two thousand, five hundred forty-three".