501087 has 16 divisors (see below), whose sum is σ = 720000. Its totient is φ = 309024.

The previous prime is 501077. The next prime is 501089. The reversal of 501087 is 780105.

It is a happy number.

It is not a de Polignac number, because 501087 - 2⁸ = 500831 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 501087.

It is not an unprimeable number, because it can be changed into a prime (501089) 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 15 ways as a sum of consecutive naturals, for example, 3289 + ... + 3437.

It is an arithmetic number, because the mean of its divisors is an integer number (45000).

2⁵⁰¹⁰⁸⁷ is an apocalyptic number.

501087 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

501087 is a deficient number, since it is larger than the sum of its proper divisors (218913).

501087 is a wasteful number, since it uses less digits than its factorization.

501087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 501087 is about 707.8749889634. The cubic root of 501087 is about 79.4275277996.

The spelling of 501087 in words is "five hundred one thousand, eighty-seven".