55424222 has 16 divisors (see below), whose sum is σ = 95372640. Its totient is φ = 23663328.

The previous prime is 55424219. The next prime is 55424231. The reversal of 55424222 is 22242455.

It is a junction number, because it is equal to n+sod(n) for n = 55424191 and 55424200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3593 + ... + 11124.

It is an arithmetic number, because the mean of its divisors is an integer number (5960790).

Almost surely, 2^55424222 is an apocalyptic number.

55424222 is a deficient number, since it is larger than the sum of its proper divisors (39948418).

55424222 is a wasteful number, since it uses less digits than its factorization.

55424222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14995.

The product of its digits is 6400, while the sum is 26.

The square root of 55424222 is about 7444.7445893059. The cubic root of 55424222 is about 381.2704981544.

Adding to 55424222 its reverse (22242455), we get a palindrome (77666677).

The spelling of 55424222 in words is "fifty-five million, four hundred twenty-four thousand, two hundred twenty-two".