452002321 has 4 divisors (see below), whose sum is σ = 452053732. Its totient is φ = 451950912.

The previous prime is 452002303. The next prime is 452002379. The reversal of 452002321 is 123200254.

It is the 8680-th star number.

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 321700096 + 130302225 = 17936^2 + 11415^2 .

It is a cyclic number.

It is not a de Polignac number, because 452002321 - 2⁷ = 452002193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (452002121) 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, 8820 + ... + 31333.

It is an arithmetic number, because the mean of its divisors is an integer number (113013433).

Almost surely, 2^452002321 is an apocalyptic number.

It is an amenable number.

452002321 is a deficient number, since it is larger than the sum of its proper divisors (51411).

452002321 is a wasteful number, since it uses less digits than its factorization.

452002321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51410.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 452002321 is about 21260.3462107276. The cubic root of 452002321 is about 767.4443414741. Note that the first 3 decimals are identical.

Adding to 452002321 its reverse (123200254), we get a palindrome (575202575).

The spelling of 452002321 in words is "four hundred fifty-two million, two thousand, three hundred twenty-one".