55111422 has 8 divisors (see below), whose sum is σ = 110222856. Its totient is φ = 18370472.

The previous prime is 55111417. The next prime is 55111429. The reversal of 55111422 is 22411155.

It is a sphenic number, since it is the product of 3 distinct primes.

55111422 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55111429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4592613 + ... + 4592624.

It is an arithmetic number, because the mean of its divisors is an integer number (13777857).

Almost surely, 2^55111422 is an apocalyptic number.

55111422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55111422 is a wasteful number, since it uses less digits than its factorization.

55111422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9185242.

The product of its digits is 400, while the sum is 21.

The square root of 55111422 is about 7423.7067560620. The cubic root of 55111422 is about 380.5518804704.

Adding to 55111422 its reverse (22411155), we get a palindrome (77522577).

The spelling of 55111422 in words is "fifty-five million, one hundred eleven thousand, four hundred twenty-two".