505168 has 10 divisors (see below), whose sum is σ = 978794. Its totient is φ = 252576.

The previous prime is 505159. The next prime is 505181. The reversal of 505168 is 861505.

It can be written as a sum of positive squares in only one way, i.e., 419904 + 85264 = 648^2 + 292^2 .

It is a congruent number.

It is an unprimeable number.

505168 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15771 + ... + 15802.

2⁵⁰⁵¹⁶⁸ is an apocalyptic number.

It is an amenable number.

505168 is a deficient number, since it is larger than the sum of its proper divisors (473626).

505168 is a wasteful number, since it uses less digits than its factorization.

505168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31581 (or 31575 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 505168 is about 710.7517147359. The cubic root of 505168 is about 79.6425721113.

The spelling of 505168 in words is "five hundred five thousand, one hundred sixty-eight".