55243744272 has 240 divisors, whose sum is σ = 175149861120. Its totient is φ = 16149196800.

The previous prime is 55243744249. The next prime is 55243744273. The reversal of 55243744272 is 27244734255.

55243744272 is a `hidden beast` number, since 5 + 5 + 2 + 4 + 374 + 4 + 272 = 666.

It is not an unprimeable number, because it can be changed into a prime (55243744273) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2827497 + ... + 2846967.

It is an arithmetic number, because the mean of its divisors is an integer number (729791088).

Almost surely, 2^55243744272 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 55243744272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87574930560).

55243744272 is an abundant number, since it is smaller than the sum of its proper divisors (119906116848).

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

55243744272 is a wasteful number, since it uses less digits than its factorization.

55243744272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19582 (or 19573 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 45.

The spelling of 55243744272 in words is "fifty-five billion, two hundred forty-three million, seven hundred forty-four thousand, two hundred seventy-two".