517705429 has 2 divisors, whose sum is σ = 517705430. Its totient is φ = 517705428.

The previous prime is 517705421. The next prime is 517705469. The reversal of 517705429 is 924507715.

It is an a-pointer prime, because the next prime (517705469) can be obtained adding 517705429 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 262504804 + 255200625 = 16202^2 + 15975^2 .

It is a cyclic number.

It is not a de Polignac number, because 517705429 - 2³ = 517705421 is a prime.

It is a super-2 number, since 2×517705429² = 536037822432148082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 517705391 and 517705400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (517705421) 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, 258852714 + 258852715.

It is an arithmetic number, because the mean of its divisors is an integer number (258852715).

Almost surely, 2^517705429 is an apocalyptic number.

It is an amenable number.

517705429 is a deficient number, since it is larger than the sum of its proper divisors (1).

517705429 is an equidigital number, since it uses as much as digits as its factorization.

517705429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 88200, while the sum is 40.

The square root of 517705429 is about 22753.1410798597. The cubic root of 517705429 is about 802.9606075917.

The spelling of 517705429 in words is "five hundred seventeen million, seven hundred five thousand, four hundred twenty-nine".