517115189 has 2 divisors, whose sum is σ = 517115190. Its totient is φ = 517115188.

The previous prime is 517115173. The next prime is 517115201. The reversal of 517115189 is 981511715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 479391025 + 37724164 = 21895^2 + 6142^2 .

It is a cyclic number.

It is not a de Polignac number, because 517115189 - 2⁴ = 517115173 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (517115089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258557594 + 258557595.

It is an arithmetic number, because the mean of its divisors is an integer number (258557595).

Almost surely, 2^517115189 is an apocalyptic number.

It is an amenable number.

517115189 is a deficient number, since it is larger than the sum of its proper divisors (1).

517115189 is an equidigital number, since it uses as much as digits as its factorization.

517115189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 38.

The square root of 517115189 is about 22740.1668639436. The cubic root of 517115189 is about 802.6553376637.

The spelling of 517115189 in words is "five hundred seventeen million, one hundred fifteen thousand, one hundred eighty-nine".