55222822656 has 288 divisors, whose sum is σ = 174403891200. Its totient is φ = 17197608960.

The previous prime is 55222822643. The next prime is 55222822657. The reversal of 55222822656 is 65622822255.

55222822656 is a `hidden beast` number, since 552 + 2 + 28 + 2 + 26 + 56 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55222822657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6209445 + ... + 6218331.

Almost surely, 2^55222822656 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 55222822656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87201945600).

55222822656 is an abundant number, since it is smaller than the sum of its proper divisors (119181068544).

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

55222822656 is a wasteful number, since it uses less digits than its factorization.

55222822656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8972 (or 8952 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 45.

The spelling of 55222822656 in words is "fifty-five billion, two hundred twenty-two million, eight hundred twenty-two thousand, six hundred fifty-six".