5556566 has 8 divisors (see below), whose sum is σ = 8538264. Its totient is φ = 2710480.

The previous prime is 5556559. The next prime is 5556619. The reversal of 5556566 is 6656555.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 33800 + ... + 33963.

It is an arithmetic number, because the mean of its divisors is an integer number (1067283).

Almost surely, 2^5556566 is an apocalyptic number.

5556566 is a deficient number, since it is larger than the sum of its proper divisors (2981698).

5556566 is a wasteful number, since it uses less digits than its factorization.

5556566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67806.

The product of its digits is 135000, while the sum is 38.

The square root of 5556566 is about 2357.2369418453. The cubic root of 5556566 is about 177.1204984540.

The spelling of 5556566 in words is "five million, five hundred fifty-six thousand, five hundred sixty-six".