55133805 has 16 divisors (see below), whose sum is σ = 93403584. Its totient is φ = 27674880.

The previous prime is 55133791. The next prime is 55133821. The reversal of 55133805 is 50833155.

55133805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55133805 - 2⁸ = 55133549 is a prime.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 107851 + ... + 108360.

It is an arithmetic number, because the mean of its divisors is an integer number (5837724).

Almost surely, 2^55133805 is an apocalyptic number.

It is an amenable number.

55133805 is a deficient number, since it is larger than the sum of its proper divisors (38269779).

55133805 is a wasteful number, since it uses less digits than its factorization.

55133805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216236.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 55133805 is about 7425.2141383262. The cubic root of 55133805 is about 380.6033927192.

The spelling of 55133805 in words is "fifty-five million, one hundred thirty-three thousand, eight hundred five".