4421155 has 4 divisors (see below), whose sum is σ = 5305392. Its totient is φ = 3536920.

The previous prime is 4421147. The next prime is 4421159. The reversal of 4421155 is 5511244.

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

It is not a de Polignac number, because 4421155 - 2³ = 4421147 is a prime.

It is a super-2 number, since 2×4421155² = 39093223068050, which contains 22 as substring.

It is a Duffinian number.

4421155 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4421159) 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, 442111 + ... + 442120.

It is an arithmetic number, because the mean of its divisors is an integer number (1326348).

Almost surely, 2^4421155 is an apocalyptic number.

4421155 is a deficient number, since it is larger than the sum of its proper divisors (884237).

4421155 is an equidigital number, since it uses as much as digits as its factorization.

4421155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884236.

The product of its digits is 800, while the sum is 22.

The square root of 4421155 is about 2102.6542749582. The cubic root of 4421155 is about 164.1264516519.

Adding to 4421155 its reverse (5511244), we get a palindrome (9932399).

The spelling of 4421155 in words is "four million, four hundred twenty-one thousand, one hundred fifty-five".