55111622 has 8 divisors (see below), whose sum is σ = 82707096. Its totient is φ = 27542592.

The previous prime is 55111619. The next prime is 55111627. The reversal of 55111622 is 22611155.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55111627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128 + ... + 10499.

It is an arithmetic number, because the mean of its divisors is an integer number (10338387).

Almost surely, 2^55111622 is an apocalyptic number.

55111622 is a deficient number, since it is larger than the sum of its proper divisors (27595474).

55111622 is a wasteful number, since it uses less digits than its factorization.

55111622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13222.

The product of its digits is 600, while the sum is 23.

The square root of 55111622 is about 7423.7202264094. The cubic root of 55111622 is about 380.5523408122.

Adding to 55111622 its reverse (22611155), we get a palindrome (77722777).

The spelling of 55111622 in words is "fifty-five million, one hundred eleven thousand, six hundred twenty-two".