501887 has 4 divisors (see below), whose sum is σ = 508320. Its totient is φ = 495456.

The previous prime is 501863. The next prime is 501889. The reversal of 501887 is 788105.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-501887 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 (501889) 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, 3098 + ... + 3255.

It is an arithmetic number, because the mean of its divisors is an integer number (127080).

2⁵⁰¹⁸⁸⁷ is an apocalyptic number.

501887 is a deficient number, since it is larger than the sum of its proper divisors (6433).

501887 is an equidigital number, since it uses as much as digits as its factorization.

501887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6432.

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 501887 is about 708.4398351307. The cubic root of 501887 is about 79.4697747791.

The spelling of 501887 in words is "five hundred one thousand, eight hundred eighty-seven".