517234489 has 2 divisors, whose sum is σ = 517234490. Its totient is φ = 517234488.

The previous prime is 517234481. The next prime is 517234493. The reversal of 517234489 is 984432715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 279458089 + 237776400 = 16717^2 + 15420^2 .

It is a cyclic number.

It is not a de Polignac number, because 517234489 - 2³ = 517234481 is a prime.

It is a super-2 number, since 2×517234489² = 535063033222182242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (517234481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258617244 + 258617245.

It is an arithmetic number, because the mean of its divisors is an integer number (258617245).

Almost surely, 2^517234489 is an apocalyptic number.

It is an amenable number.

517234489 is a deficient number, since it is larger than the sum of its proper divisors (1).

517234489 is an equidigital number, since it uses as much as digits as its factorization.

517234489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 43.

The square root of 517234489 is about 22742.7898244696. The cubic root of 517234489 is about 802.7170579025.

The spelling of 517234489 in words is "five hundred seventeen million, two hundred thirty-four thousand, four hundred eighty-nine".