453000221 has 4 divisors (see below), whose sum is σ = 453394944. Its totient is φ = 452605500.

The previous prime is 453000209. The next prime is 453000253. The reversal of 453000221 is 122000354.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 453000221 - 2¹⁴ = 452983837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 453000221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (453000721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195635 + ... + 197936.

It is an arithmetic number, because the mean of its divisors is an integer number (113348736).

Almost surely, 2^453000221 is an apocalyptic number.

It is an amenable number.

453000221 is a deficient number, since it is larger than the sum of its proper divisors (394723).

453000221 is a wasteful number, since it uses less digits than its factorization.

453000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394722.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 453000221 is about 21283.8018455350. The cubic root of 453000221 is about 768.0086968461.

Adding to 453000221 its reverse (122000354), we get a palindrome (575000575).

The spelling of 453000221 in words is "four hundred fifty-three million, two hundred twenty-one", and thus it is an aban number.