55242112 has 64 divisors (see below), whose sum is σ = 118972800. Its totient is φ = 25452544.

The previous prime is 55242107. The next prime is 55242127. The reversal of 55242112 is 21124255.

It is a tau number, because it is divible by the number of its divisors (64).

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, 115089 + ... + 115567.

It is an arithmetic number, because the mean of its divisors is an integer number (1858950).

Almost surely, 2^55242112 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 55242112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59486400).

55242112 is an abundant number, since it is smaller than the sum of its proper divisors (63730688).

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

55242112 is a wasteful number, since it uses less digits than its factorization.

55242112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563 (or 551 counting only the distinct ones).

The product of its digits is 800, while the sum is 22.

The square root of 55242112 is about 7432.5037504195. The cubic root of 55242112 is about 380.8524537588.

Adding to 55242112 its reverse (21124255), we get a palindrome (76366367).

The spelling of 55242112 in words is "fifty-five million, two hundred forty-two thousand, one hundred twelve".