4224001 has 4 divisors (see below), whose sum is σ = 4252500. Its totient is φ = 4195504.

The previous prime is 4223993. The next prime is 4224037. The reversal of 4224001 is 1004224.

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 303601 + 3920400 = 551^2 + 1980^2 .

It is a cyclic number.

It is not a de Polignac number, because 4224001 - 2³ = 4223993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4224601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14026 + ... + 14323.

It is an arithmetic number, because the mean of its divisors is an integer number (1063125).

Almost surely, 2^4224001 is an apocalyptic number.

It is an amenable number.

4224001 is a deficient number, since it is larger than the sum of its proper divisors (28499).

4224001 is a wasteful number, since it uses less digits than its factorization.

4224001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28498.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 4224001 is about 2055.2374558673. The cubic root of 4224001 is about 161.6496135813.

Adding to 4224001 its reverse (1004224), we get a palindrome (5228225).

The spelling of 4224001 in words is "four million, two hundred twenty-four thousand, one".