517809141 has 12 divisors (see below), whose sum is σ = 748237932. Its totient is φ = 345071616.

The previous prime is 517809107. The next prime is 517809161. The reversal of 517809141 is 141908715.

It can be written as a sum of positive squares in 2 ways, for example, as 258277041 + 259532100 = 16071^2 + 16110^2 .

It is not a de Polignac number, because 517809141 - 2⁶ = 517809077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 517809096 and 517809105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517809161) 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 in 11 ways as a sum of consecutive naturals, for example, 16885 + ... + 36341.

It is an arithmetic number, because the mean of its divisors is an integer number (62353161).

Almost surely, 2^517809141 is an apocalyptic number.

It is an amenable number.

517809141 is a deficient number, since it is larger than the sum of its proper divisors (230428791).

517809141 is a wasteful number, since it uses less digits than its factorization.

517809141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22420 (or 22417 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The square root of 517809141 is about 22755.4200356750. The cubic root of 517809141 is about 803.0142230814.

The spelling of 517809141 in words is "five hundred seventeen million, eight hundred nine thousand, one hundred forty-one".