55202224 has 120 divisors (see below), whose sum is σ = 140200848. Its totient is φ = 20805120.

The previous prime is 55202219. The next prime is 55202233. The reversal of 55202224 is 42220255.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 55202195 and 55202204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 319002 + ... + 319174.

Almost surely, 2^55202224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55202224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70100424).

55202224 is an abundant number, since it is smaller than the sum of its proper divisors (84998624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55202224 is a wasteful number, since it uses less digits than its factorization.

55202224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 55202224 is about 7429.8199170639. The cubic root of 55202224 is about 380.7607658540.

Adding to 55202224 its reverse (42220255), we get a palindrome (97422479).

It can be divided in two parts, 5520 and 2224, that added together give a square (7744 = 88²).

The spelling of 55202224 in words is "fifty-five million, two hundred two thousand, two hundred twenty-four".