55511133 has 8 divisors (see below), whose sum is σ = 76567200. Its totient is φ = 35731248.

The previous prime is 55511123. The next prime is 55511143. The reversal of 55511133 is 33111555.

55511133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55511123) and next prime (55511143).

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

It is not a de Polignac number, because 55511133 - 2²⁴ = 38733917 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55511123) 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 7 ways as a sum of consecutive naturals, for example, 318943 + ... + 319116.

It is an arithmetic number, because the mean of its divisors is an integer number (9570900).

Almost surely, 2^55511133 is an apocalyptic number.

It is an amenable number.

55511133 is a deficient number, since it is larger than the sum of its proper divisors (21056067).

55511133 is a wasteful number, since it uses less digits than its factorization.

55511133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638091.

The product of its digits is 1125, while the sum is 24.

The square root of 55511133 is about 7450.5793734447. The cubic root of 55511133 is about 381.4696848011.

Adding to 55511133 its reverse (33111555), we get a palindrome (88622688).

The spelling of 55511133 in words is "fifty-five million, five hundred eleven thousand, one hundred thirty-three".