55239870132 has 192 divisors, whose sum is σ = 156473856000. Its totient is φ = 16798674816.

The previous prime is 55239870079. The next prime is 55239870139. The reversal of 55239870132 is 23107893255.

55239870132 is a `hidden beast` number, since 5 + 523 + 98 + 7 + 0 + 1 + 32 = 666.

55239870132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55239870139) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5974369 + ... + 5983607.

It is an arithmetic number, because the mean of its divisors is an integer number (814968000).

Almost surely, 2^55239870132 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 55239870132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78236928000).

55239870132 is an abundant number, since it is smaller than the sum of its proper divisors (101233985868).

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

55239870132 is a wasteful number, since it uses less digits than its factorization.

55239870132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9387 (or 9379 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 55239870132 in words is "fifty-five billion, two hundred thirty-nine million, eight hundred seventy thousand, one hundred thirty-two".