55330222 has 4 divisors (see below), whose sum is σ = 82995336. Its totient is φ = 27665110.

The previous prime is 55330211. The next prime is 55330237. The reversal of 55330222 is 22203355.

55330222 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.

It is a super-2 number, since 2×55330222² = 6122866933138568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55330193 and 55330202.

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 as a sum of consecutive naturals, namely, 13832554 + ... + 13832557.

It is an arithmetic number, because the mean of its divisors is an integer number (20748834).

Almost surely, 2^55330222 is an apocalyptic number.

55330222 is a deficient number, since it is larger than the sum of its proper divisors (27665114).

55330222 is a wasteful number, since it uses less digits than its factorization.

55330222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27665113.

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 55330222 is about 7438.4287319299. The cubic root of 55330222 is about 381.0548300705.

Adding to 55330222 its reverse (22203355), we get a palindrome (77533577).

The spelling of 55330222 in words is "fifty-five million, three hundred thirty thousand, two hundred twenty-two".