55211555056655 has 16 divisors (see below), whose sum is σ = 66358767309120. Its totient is φ = 44099365118208.

The previous prime is 55211555056601. The next prime is 55211555056681. The reversal of 55211555056655 is 55665055511255.

It is a cyclic number.

It is not a de Polignac number, because 55211555056655 - 2⁶ = 55211555056591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55211555056655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4548899 + ... + 11450571.

It is an arithmetic number, because the mean of its divisors is an integer number (4147422956820).

Almost surely, 2^{55211555056655} is an apocalyptic number.

55211555056655 is a deficient number, since it is larger than the sum of its proper divisors (11147212252465).

55211555056655 is a wasteful number, since it uses less digits than its factorization.

55211555056655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6904210.

The product of its (nonzero) digits is 28125000, while the sum is 56.

The spelling of 55211555056655 in words is "fifty-five trillion, two hundred eleven billion, five hundred fifty-five million, fifty-six thousand, six hundred fifty-five".