55605556 has 12 divisors (see below), whose sum is σ = 97624800. Its totient is φ = 27712760.

The previous prime is 55605527. The next prime is 55605577. The reversal of 55605556 is 65550655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21106 + ... + 23593.

It is an arithmetic number, because the mean of its divisors is an integer number (8135400).

Almost surely, 2^55605556 is an apocalyptic number.

It is an amenable number.

55605556 is a deficient number, since it is larger than the sum of its proper divisors (42019244).

55605556 is a wasteful number, since it uses less digits than its factorization.

55605556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45014 (or 45012 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 37.

The square root of 55605556 is about 7456.9133024329. The cubic root of 55605556 is about 381.6858523013.

The spelling of 55605556 in words is "fifty-five million, six hundred five thousand, five hundred fifty-six".