505605017 has 2 divisors, whose sum is σ = 505605018. Its totient is φ = 505605016.

The previous prime is 505605013. The next prime is 505605059. The reversal of 505605017 is 710506505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 499030921 + 6574096 = 22339^2 + 2564^2 .

It is a cyclic number.

It is not a de Polignac number, because 505605017 - 2² = 505605013 is a prime.

It is a super-3 number, since 3×505605017³ (a number of 27 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (505605013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252802508 + 252802509.

It is an arithmetic number, because the mean of its divisors is an integer number (252802509).

Almost surely, 2^505605017 is an apocalyptic number.

It is an amenable number.

505605017 is a deficient number, since it is larger than the sum of its proper divisors (1).

505605017 is an equidigital number, since it uses as much as digits as its factorization.

505605017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 505605017 is about 22485.6624763426. The cubic root of 505605017 is about 796.6553155326.

The spelling of 505605017 in words is "five hundred five million, six hundred five thousand, seventeen".