4622221 has 4 divisors (see below), whose sum is σ = 4628092. Its totient is φ = 4616352.

The previous prime is 4622213. The next prime is 4622257. The reversal of 4622221 is 1222264.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 741321 + 3880900 = 861^2 + 1970^2 .

It is a cyclic number.

It is not a de Polignac number, because 4622221 - 2³ = 4622213 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4625221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1530 + ... + 3403.

It is an arithmetic number, because the mean of its divisors is an integer number (1157023).

Almost surely, 2^4622221 is an apocalyptic number.

It is an amenable number.

4622221 is a deficient number, since it is larger than the sum of its proper divisors (5871).

4622221 is an equidigital number, since it uses as much as digits as its factorization.

4622221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5870.

The product of its digits is 384, while the sum is 19.

The square root of 4622221 is about 2149.9351153000. The cubic root of 4622221 is about 166.5777156459.

Adding to 4622221 its reverse (1222264), we get a palindrome (5844485).

The spelling of 4622221 in words is "four million, six hundred twenty-two thousand, two hundred twenty-one".