55449308160 has 880 divisors, whose sum is σ = 216854922240. Its totient is φ = 13496647680.

The previous prime is 55449308137. The next prime is 55449308203. The reversal of 55449308160 is 6180394455.

55449308160 is a `hidden beast` number, since 5 + 544 + 93 + 0 + 8 + 16 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 244269967 + ... + 244270193.

It is an arithmetic number, because the mean of its divisors is an integer number (246426048).

Almost surely, 2^55449308160 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 55449308160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108427461120).

55449308160 is an abundant number, since it is smaller than the sum of its proper divisors (161405614080).

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

55449308160 is a wasteful number, since it uses less digits than its factorization.

55449308160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

It can be divided in two parts, 55449 and 308160, that added together give a square (363609 = 603²).

The spelling of 55449308160 in words is "fifty-five billion, four hundred forty-nine million, three hundred eight thousand, one hundred sixty".