55133646 has 8 divisors (see below), whose sum is σ = 110267304. Its totient is φ = 18377880.

The previous prime is 55133633. The next prime is 55133651. The reversal of 55133646 is 64633155.

55133646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

55133646 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 4594465 + ... + 4594476.

It is an arithmetic number, because the mean of its divisors is an integer number (13783413).

Almost surely, 2^55133646 is an apocalyptic number.

55133646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55133646 is a wasteful number, since it uses less digits than its factorization.

55133646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9188946.

The product of its digits is 32400, while the sum is 33.

The square root of 55133646 is about 7425.2034315566. The cubic root of 55133646 is about 380.6030268457.

The spelling of 55133646 in words is "fifty-five million, one hundred thirty-three thousand, six hundred forty-six".