452220321 has 8 divisors (see below), whose sum is σ = 689097664. Its totient is φ = 258411600.

The previous prime is 452220317. The next prime is 452220337. The reversal of 452220321 is 123022254.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 452220321 - 2² = 452220317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 21534301 = 452220321 / (4 + 5 + 2 + 2 + 2 + 0 + 3 + 2 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (452220341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10767130 + ... + 10767171.

It is an arithmetic number, because the mean of its divisors is an integer number (86137208).

Almost surely, 2^452220321 is an apocalyptic number.

It is an amenable number.

452220321 is a deficient number, since it is larger than the sum of its proper divisors (236877343).

452220321 is a wasteful number, since it uses less digits than its factorization.

452220321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21534311.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 452220321 is about 21265.4725082703. The cubic root of 452220321 is about 767.5677007057.

Adding to 452220321 its reverse (123022254), we get a palindrome (575242575).

The spelling of 452220321 in words is "four hundred fifty-two million, two hundred twenty thousand, three hundred twenty-one".