505087 has 16 divisors (see below), whose sum is σ = 607392. Its totient is φ = 414720.

The previous prime is 505073. The next prime is 505091. The reversal of 505087 is 780505.

It is a cyclic number.

It is not a de Polignac number, because 505087 - 2¹¹ = 503039 is a prime.

It is a super-2 number, since 2×505087² = 510225755138, which contains 22 as substring.

505087 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6883 + ... + 6955.

It is an arithmetic number, because the mean of its divisors is an integer number (37962).

2⁵⁰⁵⁰⁸⁷ is an apocalyptic number.

505087 is a deficient number, since it is larger than the sum of its proper divisors (102305).

505087 is a wasteful number, since it uses less digits than its factorization.

505087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 505087 is about 710.6947305278. The cubic root of 505087 is about 79.6383151821.

The spelling of 505087 in words is "five hundred five thousand, eighty-seven".