504565 has 4 divisors (see below), whose sum is σ = 605484. Its totient is φ = 403648.

The previous prime is 504563. The next prime is 504593. The reversal of 504565 is 565405.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 565405 = 5 ⋅113081.

It can be written as a sum of positive squares in 2 ways, for example, as 61009 + 443556 = 247^2 + 666^2 .

It is a cyclic number.

It is not a de Polignac number, because 504565 - 2¹ = 504563 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504563) 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 in 3 ways as a sum of consecutive naturals, for example, 50452 + ... + 50461.

It is an arithmetic number, because the mean of its divisors is an integer number (151371).

2⁵⁰⁴⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

504565 is a deficient number, since it is larger than the sum of its proper divisors (100919).

504565 is a wasteful number, since it uses less digits than its factorization.

504565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100918.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 504565 is about 710.3273893072. The cubic root of 504565 is about 79.6108707156.

The spelling of 504565 in words is "five hundred four thousand, five hundred sixty-five".