6501222 has 112 divisors (see below), whose sum is σ = 18362400. Its totient is φ = 1714608.

The previous prime is 6501221. The next prime is 6501239. The reversal of 6501222 is 2221056.

6501222 is a `hidden beast` number, since 650 + 12 + 2 + 2 = 666.

6501222 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 6501195 and 6501204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6501221) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 500088 + ... + 500100.

It is an arithmetic number, because the mean of its divisors is an integer number (163950).

Almost surely, 2^6501222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6501222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9181200).

6501222 is an abundant number, since it is smaller than the sum of its proper divisors (11861178).

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

6501222 is an equidigital number, since it uses as much as digits as its factorization.

6501222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54 (or 25 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 6501222 is about 2549.7493994509. The cubic root of 6501222 is about 186.6372523097.

Adding to 6501222 its reverse (2221056), we get a palindrome (8722278).

The spelling of 6501222 in words is "six million, five hundred one thousand, two hundred twenty-two".