505166017 has 2 divisors, whose sum is σ = 505166018. Its totient is φ = 505166016.

The previous prime is 505166003. The next prime is 505166023. The reversal of 505166017 is 710661505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 343138576 + 162027441 = 18524^2 + 12729^2 .

It is a cyclic number.

It is not a de Polignac number, because 505166017 - 2⁷ = 505165889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505166017.

It is not a weakly prime, because it can be changed into another prime (505166317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252583008 + 252583009.

It is an arithmetic number, because the mean of its divisors is an integer number (252583009).

Almost surely, 2^505166017 is an apocalyptic number.

It is an amenable number.

505166017 is a deficient number, since it is larger than the sum of its proper divisors (1).

505166017 is an equidigital number, since it uses as much as digits as its factorization.

505166017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 505166017 is about 22475.8985804795. The cubic root of 505166017 is about 796.4246790076.

The spelling of 505166017 in words is "five hundred five million, one hundred sixty-six thousand, seventeen".