517140269 has 2 divisors, whose sum is σ = 517140270. Its totient is φ = 517140268.

The previous prime is 517140229. The next prime is 517140287. The reversal of 517140269 is 962041715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 348270244 + 168870025 = 18662^2 + 12995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-517140269 is a prime.

It is a super-2 number, since 2×517140269² = 534868115642784722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (517140229) 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 as a sum of consecutive naturals, namely, 258570134 + 258570135.

It is an arithmetic number, because the mean of its divisors is an integer number (258570135).

Almost surely, 2^517140269 is an apocalyptic number.

It is an amenable number.

517140269 is a deficient number, since it is larger than the sum of its proper divisors (1).

517140269 is an equidigital number, since it uses as much as digits as its factorization.

517140269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 517140269 is about 22740.7183043984. The cubic root of 517140269 is about 802.6683136703.

The spelling of 517140269 in words is "five hundred seventeen million, one hundred forty thousand, two hundred sixty-nine".