505287 has 12 divisors (see below), whose sum is σ = 761904. Its totient is φ = 322080.

The previous prime is 505283. The next prime is 505301. The reversal of 505287 is 782505.

It is a happy number.

It is not a de Polignac number, because 505287 - 2² = 505283 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505287.

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 505287.

It is not an unprimeable number, because it can be changed into a prime (505283) 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 11 ways as a sum of consecutive naturals, for example, 1014 + ... + 1427.

It is an arithmetic number, because the mean of its divisors is an integer number (63492).

2⁵⁰⁵²⁸⁷ is an apocalyptic number.

505287 is a deficient number, since it is larger than the sum of its proper divisors (256617).

505287 is a wasteful number, since it uses less digits than its factorization.

505287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2470 (or 2467 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 505287 is about 710.8354239907. The cubic root of 505287 is about 79.6488252930.

The spelling of 505287 in words is "five hundred five thousand, two hundred eighty-seven".