8550420 has 48 divisors (see below), whose sum is σ = 24718848. Its totient is φ = 2206080.

The previous prime is 8550419. The next prime is 8550449. The reversal of 8550420 is 240558.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439 + ... + 4158.

It is an arithmetic number, because the mean of its divisors is an integer number (514976).

Almost surely, 2^8550420 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 8550420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12359424).

8550420 is an abundant number, since it is smaller than the sum of its proper divisors (16168428).

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

8550420 is a wasteful number, since it uses less digits than its factorization.

8550420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4640 (or 4638 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 8550420 is about 2924.1101210454. The cubic root of 8550420 is about 204.4854834737.

Adding to 8550420 its reverse (240558), we get a palindrome (8790978).

It can be divided in two parts, 85 and 50420, that added together give a palindrome (50505).

The spelling of 8550420 in words is "eight million, five hundred fifty thousand, four hundred twenty".