55656212 has 12 divisors (see below), whose sum is σ = 97537440. Its totient is φ = 27788376.

The previous prime is 55656199. The next prime is 55656221. The reversal of 55656212 is 21265655.

55656212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55656212² = 6195227868377888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6662 + ... + 12477.

It is an arithmetic number, because the mean of its divisors is an integer number (8128120).

Almost surely, 2^55656212 is an apocalyptic number.

It is an amenable number.

55656212 is a deficient number, since it is larger than the sum of its proper divisors (41881228).

55656212 is a wasteful number, since it uses less digits than its factorization.

55656212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19870 (or 19868 counting only the distinct ones).

The product of its digits is 18000, while the sum is 32.

The square root of 55656212 is about 7460.3091088775. The cubic root of 55656212 is about 381.8017208804.

The spelling of 55656212 in words is "fifty-five million, six hundred fifty-six thousand, two hundred twelve".