8555224878 has 24 divisors (see below), whose sum is σ = 19037303688. Its totient is φ = 2774667312.

The previous prime is 8555224859. The next prime is 8555224879. The reversal of 8555224878 is 8784225558.

8555224878 is a `hidden beast` number, since 8 + 5 + 5 + 522 + 48 + 78 = 666.

It is a super-2 number, since 2×8555224878² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8555224879) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6422176 + ... + 6423507.

It is an arithmetic number, because the mean of its divisors is an integer number (793220987).

Almost surely, 2^8555224878 is an apocalyptic number.

8555224878 is an abundant number, since it is smaller than the sum of its proper divisors (10482078810).

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

8555224878 is a wasteful number, since it uses less digits than its factorization.

8555224878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12845728 (or 12845725 counting only the distinct ones).

The product of its digits is 7168000, while the sum is 54.

The square root of 8555224878 is about 92494.4586340176. The cubic root of 8555224878 is about 2045.2377959697.

The spelling of 8555224878 in words is "eight billion, five hundred fifty-five million, two hundred twenty-four thousand, eight hundred seventy-eight".