517171121 has 2 divisors, whose sum is σ = 517171122. Its totient is φ = 517171120.

The previous prime is 517171097. The next prime is 517171129. The reversal of 517171121 is 121171715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 260370496 + 256800625 = 16136^2 + 16025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-517171121 is a prime.

It is not a weakly prime, because it can be changed into another prime (517171129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258585560 + 258585561.

It is an arithmetic number, because the mean of its divisors is an integer number (258585561).

Almost surely, 2^517171121 is an apocalyptic number.

It is an amenable number.

517171121 is a deficient number, since it is larger than the sum of its proper divisors (1).

517171121 is an equidigital number, since it uses as much as digits as its factorization.

517171121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 490, while the sum is 26.

The square root of 517171121 is about 22741.3966369702. The cubic root of 517171121 is about 802.6842754457.

The spelling of 517171121 in words is "five hundred seventeen million, one hundred seventy-one thousand, one hundred twenty-one".