452521321 has 12 divisors (see below), whose sum is σ = 526990080. Its totient is φ = 387442440.

The previous prime is 452521259. The next prime is 452521331. The reversal of 452521321 is 123125254.

It is not a de Polignac number, because 452521321 - 2¹⁹ = 451997033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (452521331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43900 + ... + 53218.

It is an arithmetic number, because the mean of its divisors is an integer number (43915840).

Almost surely, 2^452521321 is an apocalyptic number.

It is an amenable number.

452521321 is a deficient number, since it is larger than the sum of its proper divisors (74468759).

452521321 is an equidigital number, since it uses as much as digits as its factorization.

452521321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10324 (or 10317 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 452521321 is about 21272.5485309119. The cubic root of 452521321 is about 767.7379618418.

Adding to 452521321 its reverse (123125254), we get a palindrome (575646575).

The spelling of 452521321 in words is "four hundred fifty-two million, five hundred twenty-one thousand, three hundred twenty-one".