5559987 has 4 divisors (see below), whose sum is σ = 7413320. Its totient is φ = 3706656.

The previous prime is 5559979. The next prime is 5560001. The reversal of 5559987 is 7899555.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 5559987 - 2³ = 5559979 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5559907) 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 3 ways as a sum of consecutive naturals, for example, 926662 + ... + 926667.

It is an arithmetic number, because the mean of its divisors is an integer number (1853330).

Almost surely, 2^5559987 is an apocalyptic number.

5559987 is a deficient number, since it is larger than the sum of its proper divisors (1853333).

5559987 is a wasteful number, since it uses less digits than its factorization.

5559987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853332.

The product of its digits is 567000, while the sum is 48.

The square root of 5559987 is about 2357.9624678947. The cubic root of 5559987 is about 177.1568401392.

It can be divided in two parts, 555 and 9987, that multiplied together give a triangular number (5542785 = T₃₃₂₉).

The spelling of 5559987 in words is "five million, five hundred fifty-nine thousand, nine hundred eighty-seven".