515887 has 2 divisors, whose sum is σ = 515888. Its totient is φ = 515886.

The previous prime is 515873. The next prime is 515917. The reversal of 515887 is 788515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 515887 - 2¹¹ = 513839 is a prime.

It is a super-2 number, since 2×515887² = 532278793538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (515857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257943 + 257944.

It is an arithmetic number, because the mean of its divisors is an integer number (257944).

2⁵¹⁵⁸⁸⁷ is an apocalyptic number.

515887 is a deficient number, since it is larger than the sum of its proper divisors (1).

515887 is an equidigital number, since it uses as much as digits as its factorization.

515887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11200, while the sum is 34.

The square root of 515887 is about 718.2527410320. The cubic root of 515887 is about 80.2019377521.

The spelling of 515887 in words is "five hundred fifteen thousand, eight hundred eighty-seven".