55211224 has 32 divisors (see below), whose sum is σ = 108656640. Its totient is φ = 26250400.

The previous prime is 55211179. The next prime is 55211227. The reversal of 55211224 is 42211255.

55211224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 55211195 and 55211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55211227) 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, 34359 + ... + 35929.

It is an arithmetic number, because the mean of its divisors is an integer number (3395520).

Almost surely, 2^55211224 is an apocalyptic number.

It is an amenable number.

55211224 is a deficient number, since it is larger than the sum of its proper divisors (53445416).

55211224 is a wasteful number, since it uses less digits than its factorization.

55211224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791 (or 1787 counting only the distinct ones).

The product of its digits is 800, while the sum is 22.

The square root of 55211224 is about 7430.4255598182. The cubic root of 55211224 is about 380.7814574157.

Adding to 55211224 its reverse (42211255), we get a palindrome (97422479).

The spelling of 55211224 in words is "fifty-five million, two hundred eleven thousand, two hundred twenty-four".