4221554 has 8 divisors (see below), whose sum is σ = 6343920. Its totient is φ = 2106916.

The previous prime is 4221551. The next prime is 4221563. The reversal of 4221554 is 4551224.

It is a happy number.

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

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 284 + ... + 2919.

It is an arithmetic number, because the mean of its divisors is an integer number (792990).

Almost surely, 2^4221554 is an apocalyptic number.

4221554 is a deficient number, since it is larger than the sum of its proper divisors (2122366).

4221554 is a wasteful number, since it uses less digits than its factorization.

4221554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3864.

The product of its digits is 1600, while the sum is 23.

The square root of 4221554 is about 2054.6420612846. The cubic root of 4221554 is about 161.6183925492.

Adding to 4221554 its reverse (4551224), we get a palindrome (8772778).

The spelling of 4221554 in words is "four million, two hundred twenty-one thousand, five hundred fifty-four".