55113222 has 16 divisors (see below), whose sum is σ = 111021120. Its totient is φ = 18238632.

The previous prime is 55113211. The next prime is 55113251. The reversal of 55113222 is 22231155.

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, 32208 + ... + 33875.

It is an arithmetic number, because the mean of its divisors is an integer number (6938820).

Almost surely, 2^55113222 is an apocalyptic number.

55113222 is an abundant number, since it is smaller than the sum of its proper divisors (55907898).

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

55113222 is a wasteful number, since it uses less digits than its factorization.

55113222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66227.

The product of its digits is 600, while the sum is 21.

The square root of 55113222 is about 7423.8279883090. The cubic root of 55113222 is about 380.5560235071.

Adding to 55113222 its reverse (22231155), we get a palindrome (77344377).

The spelling of 55113222 in words is "fifty-five million, one hundred thirteen thousand, two hundred twenty-two".