55505161056 has 384 divisors, whose sum is σ = 162858802176. Its totient is φ = 16495902720.

The previous prime is 55505161051. The next prime is 55505161081. The reversal of 55505161056 is 65016150555.

55505161056 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 (55505161051) 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, 244516015 + ... + 244516241.

It is an arithmetic number, because the mean of its divisors is an integer number (424111464).

Almost surely, 2^55505161056 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 55505161056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81429401088).

55505161056 is an abundant number, since it is smaller than the sum of its proper divisors (107353641120).

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

55505161056 is a wasteful number, since it uses less digits than its factorization.

55505161056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 55505161056 in words is "fifty-five billion, five hundred five million, one hundred sixty-one thousand, fifty-six".