505365 has 16 divisors (see below), whose sum is σ = 924288. Its totient is φ = 230976.

The previous prime is 505357. The next prime is 505367. The reversal of 505365 is 563505.

It is not a de Polignac number, because 505365 - 2³ = 505357 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 505365.

It is not an unprimeable number, because it can be changed into a prime (505367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2302 + ... + 2511.

It is an arithmetic number, because the mean of its divisors is an integer number (57768).

2⁵⁰⁵³⁶⁵ is an apocalyptic number.

It is an amenable number.

505365 is a deficient number, since it is larger than the sum of its proper divisors (418923).

505365 is a wasteful number, since it uses less digits than its factorization.

505365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4828.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 505365 is about 710.8902868938. The cubic root of 505365 is about 79.6529234846.

The spelling of 505365 in words is "five hundred five thousand, three hundred sixty-five".