4445121 has 8 divisors (see below), whose sum is σ = 6118144. Its totient is φ = 2867760.

The previous prime is 4445113. The next prime is 4445153. The reversal of 4445121 is 1215444.

It is a happy number.

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

It is not a de Polignac number, because 4445121 - 2³ = 4445113 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4445321) 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 7 ways as a sum of consecutive naturals, for example, 23806 + ... + 23991.

It is an arithmetic number, because the mean of its divisors is an integer number (764768).

Almost surely, 2^4445121 is an apocalyptic number.

It is an amenable number.

4445121 is a deficient number, since it is larger than the sum of its proper divisors (1673023).

4445121 is a wasteful number, since it uses less digits than its factorization.

4445121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47831.

The product of its digits is 640, while the sum is 21.

The square root of 4445121 is about 2108.3455599118. The cubic root of 4445121 is about 164.4224805128.

It can be divided in two parts, 444 and 5121, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 4445121 in words is "four million, four hundred forty-five thousand, one hundred twenty-one".