55331223 has 8 divisors (see below), whose sum is σ = 74814336. Its totient is φ = 36367800.

The previous prime is 55331197. The next prime is 55331251. The reversal of 55331223 is 32213355.

It is a happy number.

55331223 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.

It is not a de Polignac number, because 55331223 - 2⁹ = 55330711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55331193 and 55331202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55331293) 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, 129673 + ... + 130098.

It is an arithmetic number, because the mean of its divisors is an integer number (9351792).

Almost surely, 2^55331223 is an apocalyptic number.

55331223 is a deficient number, since it is larger than the sum of its proper divisors (19483113).

55331223 is a wasteful number, since it uses less digits than its factorization.

55331223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259845.

The product of its digits is 2700, while the sum is 24.

The square root of 55331223 is about 7438.4960173411. The cubic root of 55331223 is about 381.0571279924.

Adding to 55331223 its reverse (32213355), we get a palindrome (87544578).

The spelling of 55331223 in words is "fifty-five million, three hundred thirty-one thousand, two hundred twenty-three".