452342221 has 4 divisors (see below), whose sum is σ = 452385052. Its totient is φ = 452299392.

The previous prime is 452342201. The next prime is 452342249. The reversal of 452342221 is 122243254.

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 375972100 + 76370121 = 19390^2 + 8739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-452342221 is a prime.

It is a super-2 number, since 2×452342221² = 409226969798425682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (452342201) 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 3 ways as a sum of consecutive naturals, for example, 6955 + ... + 30871.

It is an arithmetic number, because the mean of its divisors is an integer number (113096263).

Almost surely, 2^452342221 is an apocalyptic number.

It is an amenable number.

452342221 is a deficient number, since it is larger than the sum of its proper divisors (42831).

452342221 is a wasteful number, since it uses less digits than its factorization.

452342221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42830.

The product of its digits is 3840, while the sum is 25.

The square root of 452342221 is about 21268.3384635472. The cubic root of 452342221 is about 767.6366627377.

Adding to 452342221 its reverse (122243254), we get a palindrome (574585475).

The spelling of 452342221 in words is "four hundred fifty-two million, three hundred forty-two thousand, two hundred twenty-one".