5205987 has 12 divisors (see below), whose sum is σ = 7544160. Its totient is φ = 3459408.

The previous prime is 5205979. The next prime is 5205989. The reversal of 5205987 is 7895025.

5205987 is a `hidden beast` number, since 520 + 59 + 87 = 666.

It is not a de Polignac number, because 5205987 - 2³ = 5205979 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5205989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2758 + ... + 4244.

It is an arithmetic number, because the mean of its divisors is an integer number (628680).

Almost surely, 2^5205987 is an apocalyptic number.

5205987 is a deficient number, since it is larger than the sum of its proper divisors (2338173).

5205987 is a wasteful number, since it uses less digits than its factorization.

5205987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882 (or 1879 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 5205987 is about 2281.6632091525. The cubic root of 5205987 is about 173.3142849712.

The spelling of 5205987 in words is "five million, two hundred five thousand, nine hundred eighty-seven".