55565606 has 4 divisors (see below), whose sum is σ = 83348412. Its totient is φ = 27782802.

The previous prime is 55565593. The next prime is 55565611. The reversal of 55565606 is 60656555.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55565606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13891400 + ... + 13891403.

It is an arithmetic number, because the mean of its divisors is an integer number (20837103).

Almost surely, 2^55565606 is an apocalyptic number.

55565606 is a deficient number, since it is larger than the sum of its proper divisors (27782806).

55565606 is a wasteful number, since it uses less digits than its factorization.

55565606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27782805.

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

The square root of 55565606 is about 7454.2340988193. The cubic root of 55565606 is about 381.5944225708.

The spelling of 55565606 in words is "fifty-five million, five hundred sixty-five thousand, six hundred six".