55243033 has 4 divisors (see below), whose sum is σ = 57644928. Its totient is φ = 52841140.

The previous prime is 55243021. The next prime is 55243037. The reversal of 55243033 is 33034255.

It is a happy number.

55243033 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.

It is a cyclic number.

It is not a de Polignac number, because 55243033 - 2⁹ = 55242521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55242989 and 55243007.

It is not an unprimeable number, because it can be changed into a prime (55243037) 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, 1200913 + ... + 1200958.

It is an arithmetic number, because the mean of its divisors is an integer number (14411232).

Almost surely, 2^55243033 is an apocalyptic number.

It is an amenable number.

55243033 is a deficient number, since it is larger than the sum of its proper divisors (2401895).

55243033 is a wasteful number, since it uses less digits than its factorization.

55243033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2401894.

The product of its (nonzero) digits is 5400, while the sum is 25.

The square root of 55243033 is about 7432.5657077486. The cubic root of 55243033 is about 380.8545702791.

Adding to 55243033 its reverse (33034255), we get a palindrome (88277288).

The spelling of 55243033 in words is "fifty-five million, two hundred forty-three thousand, thirty-three".