55600566 has 48 divisors (see below), whose sum is σ = 130749696. Its totient is φ = 15440544.

The previous prime is 55600561. The next prime is 55600579. The reversal of 55600566 is 66500655.

55600566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55600561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57015 + ... + 57981.

It is an arithmetic number, because the mean of its divisors is an integer number (2723952).

Almost surely, 2^55600566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55600566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65374848).

55600566 is an abundant number, since it is smaller than the sum of its proper divisors (75149130).

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

55600566 is a wasteful number, since it uses less digits than its factorization.

55600566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053 (or 1016 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 55600566 is about 7456.5787060823. The cubic root of 55600566 is about 381.6744345611.

Adding to 55600566 its reverse (66500655), we get a palindrome (122101221).

The spelling of 55600566 in words is "fifty-five million, six hundred thousand, five hundred sixty-six".