5556987 has 12 divisors (see below), whose sum is σ = 8449480. Its totient is φ = 3509568.

The previous prime is 5556983. The next prime is 5557031. The reversal of 5556987 is 7896555.

5556987 is a `hidden beast` number, since 5 + 5 + 569 + 87 = 666.

It is not a de Polignac number, because 5556987 - 2² = 5556983 is a prime.

It is an Ulam number.

It is a Duffinian number.

5556987 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5556983) 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, 16078 + ... + 16419.

Almost surely, 2^5556987 is an apocalyptic number.

5556987 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

5556987 is a deficient number, since it is larger than the sum of its proper divisors (2892493).

5556987 is a wasteful number, since it uses less digits than its factorization.

5556987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32522 (or 32519 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The square root of 5556987 is about 2357.3262396198. The cubic root of 5556987 is about 177.1249715912.

The spelling of 5556987 in words is "five million, five hundred fifty-six thousand, nine hundred eighty-seven".