4421554 has 4 divisors (see below), whose sum is σ = 6632334. Its totient is φ = 2210776.

The previous prime is 4421539. The next prime is 4421567. The reversal of 4421554 is 4551244.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 3744225 + 677329 = 1935^2 + 823^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105387 + ... + 1105390.

Almost surely, 2^4421554 is an apocalyptic number.

4421554 is a deficient number, since it is larger than the sum of its proper divisors (2210780).

4421554 is a wasteful number, since it uses less digits than its factorization.

4421554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210779.

The product of its digits is 3200, while the sum is 25.

The square root of 4421554 is about 2102.7491528948. The cubic root of 4421554 is about 164.1313888598.

Adding to 4421554 its reverse (4551244), we get a palindrome (8972798).

The spelling of 4421554 in words is "four million, four hundred twenty-one thousand, five hundred fifty-four".