517372889 has 6 divisors (see below), whose sum is σ = 568682730. Its totient is φ = 470338880.

The previous prime is 517372871. The next prime is 517372901. The reversal of 517372889 is 988273715.

It can be written as a sum of positive squares in only one way, i.e., 303979225 + 213393664 = 17435^2 + 14608^2 .

It is not a de Polignac number, because 517372889 - 2¹⁶ = 517307353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (517372819) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2137784 + ... + 2138025.

It is an arithmetic number, because the mean of its divisors is an integer number (94780455).

Almost surely, 2^517372889 is an apocalyptic number.

It is an amenable number.

517372889 is a deficient number, since it is larger than the sum of its proper divisors (51309841).

517372889 is a wasteful number, since it uses less digits than its factorization.

517372889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4275831 (or 4275820 counting only the distinct ones).

The product of its digits is 846720, while the sum is 50.

The square root of 517372889 is about 22745.8323435305. The cubic root of 517372889 is about 802.7886476977.

The spelling of 517372889 in words is "five hundred seventeen million, three hundred seventy-two thousand, eight hundred eighty-nine".