5555987 has 4 divisors (see below), whose sum is σ = 5685240. Its totient is φ = 5426736.

The previous prime is 5555983. The next prime is 5555989. The reversal of 5555987 is 7895555.

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

It is a cyclic number.

It is not a de Polignac number, because 5555987 - 2² = 5555983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5555983) 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 in 3 ways as a sum of consecutive naturals, for example, 64562 + ... + 64647.

It is an arithmetic number, because the mean of its divisors is an integer number (1421310).

Almost surely, 2^5555987 is an apocalyptic number.

5555987 is a deficient number, since it is larger than the sum of its proper divisors (129253).

5555987 is a wasteful number, since it uses less digits than its factorization.

5555987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129252.

The product of its digits is 315000, while the sum is 44.

The square root of 5555987 is about 2357.1141253660. The cubic root of 5555987 is about 177.1143461931.

The spelling of 5555987 in words is "five million, five hundred fifty-five thousand, nine hundred eighty-seven".