5185987 has 2 divisors, whose sum is σ = 5185988. Its totient is φ = 5185986.

The previous prime is 5185981. The next prime is 5185991. The reversal of 5185987 is 7895815.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5185987 - 2³ = 5185979 is a prime.

It is a super-2 number, since 2×5185987² = 53788922328338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5185981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2592993 + 2592994.

It is an arithmetic number, because the mean of its divisors is an integer number (2592994).

Almost surely, 2^5185987 is an apocalyptic number.

5185987 is a deficient number, since it is larger than the sum of its proper divisors (1).

5185987 is an equidigital number, since it uses as much as digits as its factorization.

5185987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 43.

The square root of 5185987 is about 2277.2762239131. The cubic root of 5185987 is about 173.0920578800.

The spelling of 5185987 in words is "five million, one hundred eighty-five thousand, nine hundred eighty-seven".