8550000 has 180 divisors, whose sum is σ = 31482360. Its totient is φ = 2160000.

The previous prime is 8549969. The next prime is 8550001. The reversal of 8550000 is 558.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8550001) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 449991 + ... + 450009.

It is an arithmetic number, because the mean of its divisors is an integer number (174902).

Almost surely, 2^8550000 is an apocalyptic number.

8550000 is a gapful number since it is divisible by the number (80) 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 8550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15741180).

8550000 is an abundant number, since it is smaller than the sum of its proper divisors (22932360).

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

8550000 is a wasteful number, since it uses less digits than its factorization.

8550000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58 (or 29 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 8550000 is about 2924.0383034427. The cubic root of 8550000 is about 204.4821352830.

Adding to 8550000 its reverse (558), we get a palindrome (8550558).

The spelling of 8550000 in words is "eight million, five hundred fifty thousand".