505844 has 6 divisors (see below), whose sum is σ = 885234. Its totient is φ = 252920.

The previous prime is 505823. The next prime is 505867. The reversal of 505844 is 448505.

It can be written as a sum of positive squares in only one way, i.e., 438244 + 67600 = 662^2 + 260^2 .

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 505844.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63227 + ... + 63234.

It is an arithmetic number, because the mean of its divisors is an integer number (147539).

2⁵⁰⁵⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

505844 is a deficient number, since it is larger than the sum of its proper divisors (379390).

505844 is a wasteful number, since it uses less digits than its factorization.

505844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126465 (or 126463 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 505844 is about 711.2271085947. The cubic root of 505844 is about 79.6780813423.

The spelling of 505844 in words is "five hundred five thousand, eight hundred forty-four".