55131211044 has 432 divisors, whose sum is σ = 180362198016. Its totient is φ = 14065228800.

The previous prime is 55131211027. The next prime is 55131211061. The reversal of 55131211044 is 44011213155.

55131211044 is a `hidden beast` number, since 551 + 3 + 1 + 2 + 1 + 104 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (55131211027) and next prime (55131211061).

It is a junction number, because it is equal to n+sod(n) for n = 55131210999 and 55131211017.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 179580339 + ... + 179580645.

It is an arithmetic number, because the mean of its divisors is an integer number (417505088).

Almost surely, 2^55131211044 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 55131211044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90181099008).

55131211044 is an abundant number, since it is smaller than the sum of its proper divisors (125230986972).

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

55131211044 is a wasteful number, since it uses less digits than its factorization.

55131211044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 55131211044 its reverse (44011213155), we get a palindrome (99142424199).

The spelling of 55131211044 in words is "fifty-five billion, one hundred thirty-one million, two hundred eleven thousand, forty-four".