55105656 has 64 divisors (see below), whose sum is σ = 141937920. Its totient is φ = 17821440.

The previous prime is 55105651. The next prime is 55105663. The reversal of 55105656 is 65650155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55105651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124171 + ... + 124613.

It is an arithmetic number, because the mean of its divisors is an integer number (2217780).

Almost surely, 2^55105656 is an apocalyptic number.

It is an amenable number.

55105656 is an abundant number, since it is smaller than the sum of its proper divisors (86832264).

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

55105656 is a wasteful number, since it uses less digits than its factorization.

55105656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596 (or 592 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 55105656 is about 7423.3183954348. The cubic root of 55105656 is about 380.5386083355.

The spelling of 55105656 in words is "fifty-five million, one hundred five thousand, six hundred fifty-six".