55000133 has 4 divisors (see below), whose sum is σ = 55036800. Its totient is φ = 54963468.

The previous prime is 55000129. The next prime is 55000163. The reversal of 55000133 is 33100055.

55000133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33100055 = 5 ⋅6620011.

It is a cyclic number.

It is not a de Polignac number, because 55000133 - 2² = 55000129 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55000163) 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 3 ways as a sum of consecutive naturals, for example, 15983 + ... + 19116.

It is an arithmetic number, because the mean of its divisors is an integer number (13759200).

Almost surely, 2^55000133 is an apocalyptic number.

It is an amenable number.

55000133 is a deficient number, since it is larger than the sum of its proper divisors (36667).

55000133 is a wasteful number, since it uses less digits than its factorization.

55000133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36666.

The product of its (nonzero) digits is 225, while the sum is 17.

The square root of 55000133 is about 7416.2074539484. The cubic root of 55000133 is about 380.2955526169.

Adding to 55000133 its reverse (33100055), we get a palindrome (88100188).

The spelling of 55000133 in words is "fifty-five million, one hundred thirty-three", and thus it is an aban number.