4221553 has 8 divisors (see below), whose sum is σ = 5078720. Its totient is φ = 3427920.

The previous prime is 4221551. The next prime is 4221563. The reversal of 4221553 is 3551224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4221553 - 2¹ = 4221551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4221551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15738 + ... + 16003.

It is an arithmetic number, because the mean of its divisors is an integer number (634840).

Almost surely, 2^4221553 is an apocalyptic number.

It is an amenable number.

4221553 is a deficient number, since it is larger than the sum of its proper divisors (857167).

4221553 is a wasteful number, since it uses less digits than its factorization.

4221553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31767.

The product of its digits is 1200, while the sum is 22.

The square root of 4221553 is about 2054.6418179332. The cubic root of 4221553 is about 161.6183797879.

Adding to 4221553 its reverse (3551224), we get a palindrome (7772777).

It can be divided in two parts, 4221 and 553, that added together give a palindrome (4774).

The spelling of 4221553 in words is "four million, two hundred twenty-one thousand, five hundred fifty-three".