55228906500 has 192 divisors, whose sum is σ = 165110400000. Its totient is φ = 14337024000.

The previous prime is 55228906489. The next prime is 55228906517. The reversal of 55228906500 is 560982255.

55228906500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55228906500² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44217876 + ... + 44219124.

It is an arithmetic number, because the mean of its divisors is an integer number (859950000).

Almost surely, 2^55228906500 is an apocalyptic number.

55228906500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55228906500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82555200000).

55228906500 is an abundant number, since it is smaller than the sum of its proper divisors (109881493500).

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

55228906500 is a wasteful number, since it uses less digits than its factorization.

55228906500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031 (or 2019 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 55228906500 in words is "fifty-five billion, two hundred twenty-eight million, nine hundred six thousand, five hundred".