5665556 has 54 divisors (see below), whose sum is σ = 11798010. Its totient is φ = 2376192.

The previous prime is 5665549. The next prime is 5665559. The reversal of 5665556 is 6555665.

It is a happy number.

It can be written as a sum of positive squares in 9 ways, for example, as 1188100 + 4477456 = 1090^2 + 2116^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5665559) 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 17 ways as a sum of consecutive naturals, for example, 195350 + ... + 195378.

Almost surely, 2^5665556 is an apocalyptic number.

It is an amenable number.

5665556 is an abundant number, since it is smaller than the sum of its proper divisors (6132454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5665556 is a wasteful number, since it uses less digits than its factorization.

5665556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 61 counting only the distinct ones).

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

The square root of 5665556 is about 2380.2428447535. The cubic root of 5665556 is about 178.2710594766.

The spelling of 5665556 in words is "five million, six hundred sixty-five thousand, five hundred fifty-six".