55547290656 has 288 divisors, whose sum is σ = 189533530368. Its totient is φ = 15206584320.

The previous prime is 55547290627. The next prime is 55547290663. The reversal of 55547290656 is 65609274555.

55547290656 is a `hidden beast` number, since 5 + 5 + 547 + 2 + 90 + 6 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1921300 + ... + 1949996.

It is an arithmetic number, because the mean of its divisors is an integer number (658102536).

Almost surely, 2^55547290656 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 55547290656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94766765184).

55547290656 is an abundant number, since it is smaller than the sum of its proper divisors (133986239712).

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

55547290656 is a wasteful number, since it uses less digits than its factorization.

55547290656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28784 (or 28773 counting only the distinct ones).

The product of its (nonzero) digits is 11340000, while the sum is 54.

The spelling of 55547290656 in words is "fifty-five billion, five hundred forty-seven million, two hundred ninety thousand, six hundred fifty-six".