5655566 has 8 divisors (see below), whose sum is σ = 9695280. Its totient is φ = 2423808.

The previous prime is 5655541. The next prime is 5655569. The reversal of 5655566 is 6655565.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5655569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201971 + ... + 201998.

It is an arithmetic number, because the mean of its divisors is an integer number (1211910).

Almost surely, 2^5655566 is an apocalyptic number.

5655566 is a deficient number, since it is larger than the sum of its proper divisors (4039714).

5655566 is a wasteful number, since it uses less digits than its factorization.

5655566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403978.

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

The square root of 5655566 is about 2378.1433934900. The cubic root of 5655566 is about 178.1662168291.

Subtracting 5655566 from its reverse (6655565), we obtain a palindrome (999999).

It can be divided in two parts, 56 and 55566, that multiplied together give a 4-th power (3111696 = 42⁴).

The spelling of 5655566 in words is "five million, six hundred fifty-five thousand, five hundred sixty-six".