55605656 has 16 divisors (see below), whose sum is σ = 104887440. Its totient is φ = 27635680.

The previous prime is 55605643. The next prime is 55605659. The reversal of 55605656 is 65650655.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55605659) 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, 19475 + ... + 22146.

It is an arithmetic number, because the mean of its divisors is an integer number (6555465).

Almost surely, 2^55605656 is an apocalyptic number.

It is an amenable number.

55605656 is a deficient number, since it is larger than the sum of its proper divisors (49281784).

55605656 is a wasteful number, since it uses less digits than its factorization.

55605656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41794 (or 41790 counting only the distinct ones).

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

The square root of 55605656 is about 7456.9200076171. The cubic root of 55605656 is about 381.6860811068.

The spelling of 55605656 in words is "fifty-five million, six hundred five thousand, six hundred fifty-six".