55123224132 has 144 divisors (see below), whose sum is σ = 141826422528. Its totient is φ = 16593914880.

The previous prime is 55123224131. The next prime is 55123224257. The reversal of 55123224132 is 23142232155.

It is a self number, because there is not a number n which added to its sum of digits gives 55123224132.

It is not an unprimeable number, because it can be changed into a prime (55123224131) 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 47 ways as a sum of consecutive naturals, for example, 179554323 + ... + 179554629.

It is an arithmetic number, because the mean of its divisors is an integer number (984905712).

Almost surely, 2^55123224132 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 55123224132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70913211264).

55123224132 is an abundant number, since it is smaller than the sum of its proper divisors (86703198396).

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

55123224132 is a wasteful number, since it uses less digits than its factorization.

55123224132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746 (or 437 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

Adding to 55123224132 its reverse (23142232155), we get a palindrome (78265456287).

The spelling of 55123224132 in words is "fifty-five billion, one hundred twenty-three million, two hundred twenty-four thousand, one hundred thirty-two".