55133611 has 32 divisors (see below), whose sum is σ = 66528000. Its totient is φ = 45214848.

The previous prime is 55133597. The next prime is 55133623. The reversal of 55133611 is 11633155.

55133611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 55133611 - 2⁵ = 55133579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55133651) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 307920 + ... + 308098.

It is an arithmetic number, because the mean of its divisors is an integer number (2079000).

Almost surely, 2^55133611 is an apocalyptic number.

55133611 is a deficient number, since it is larger than the sum of its proper divisors (11394389).

55133611 is a wasteful number, since it uses less digits than its factorization.

55133611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283.

The product of its digits is 1350, while the sum is 25.

The square root of 55133611 is about 7425.2010747184. The cubic root of 55133611 is about 380.6029463074.

Adding to 55133611 its reverse (11633155), we get a palindrome (66766766).

The spelling of 55133611 in words is "fifty-five million, one hundred thirty-three thousand, six hundred eleven".