4452121 has 4 divisors (see below), whose sum is σ = 4456372. Its totient is φ = 4447872.

The previous prime is 4452073. The next prime is 4452131. The reversal of 4452121 is 1212544.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 746496 + 3705625 = 864^2 + 1925^2 .

It is a cyclic number.

It is not a de Polignac number, because 4452121 - 2¹⁵ = 4419353 is a prime.

It is a Duffinian number.

4452121 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4452131) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 685 + ... + 3061.

It is an arithmetic number, because the mean of its divisors is an integer number (1114093).

Almost surely, 2^4452121 is an apocalyptic number.

It is an amenable number.

4452121 is a deficient number, since it is larger than the sum of its proper divisors (4251).

4452121 is a wasteful number, since it uses less digits than its factorization.

4452121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250.

The product of its digits is 320, while the sum is 19.

The square root of 4452121 is about 2110.0049762974. The cubic root of 4452121 is about 164.5087439112.

Adding to 4452121 its reverse (1212544), we get a palindrome (5664665).

The spelling of 4452121 in words is "four million, four hundred fifty-two thousand, one hundred twenty-one".