452123221 has 16 divisors (see below), whose sum is σ = 530242560. Its totient is φ = 381095280.

The previous prime is 452123201. The next prime is 452123227. The reversal of 452123221 is 122321254.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 452123221 - 2⁷ = 452123093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 452123192 and 452123201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (452123227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13191 + ... + 32836.

It is an arithmetic number, because the mean of its divisors is an integer number (33140160).

Almost surely, 2^452123221 is an apocalyptic number.

It is an amenable number.

452123221 is a deficient number, since it is larger than the sum of its proper divisors (78119339).

452123221 is a wasteful number, since it uses less digits than its factorization.

452123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46104.

The product of its digits is 960, while the sum is 22.

The square root of 452123221 is about 21263.1893421471. The cubic root of 452123221 is about 767.5127598171.

Adding to 452123221 its reverse (122321254), we get a palindrome (574444475).

The spelling of 452123221 in words is "four hundred fifty-two million, one hundred twenty-three thousand, two hundred twenty-one".