8550400 has 72 divisors (see below), whose sum is σ = 21326760. Its totient is φ = 3399680.

The previous prime is 8550397. The next prime is 8550413. The reversal of 8550400 is 40558.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51117 + ... + 51283.

It is an arithmetic number, because the mean of its divisors is an integer number (296205).

Almost surely, 2^8550400 is an apocalyptic number.

8550400 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 8550400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10663380).

8550400 is an abundant number, since it is smaller than the sum of its proper divisors (12776360).

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

8550400 is a wasteful number, since it uses less digits than its factorization.

8550400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 8550400 is about 2924.1067011995. The cubic root of 8550400 is about 204.4853240385.

Adding to 8550400 its reverse (40558), we get a palindrome (8590958).

The spelling of 8550400 in words is "eight million, five hundred fifty thousand, four hundred".