455325221 has 4 divisors (see below), whose sum is σ = 490350252. Its totient is φ = 420300192.

The previous prime is 455325217. The next prime is 455325239. The reversal of 455325221 is 122523554.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 218596225 + 236728996 = 14785^2 + 15386^2 .

It is not a de Polignac number, because 455325221 - 2² = 455325217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455325421) 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, 17512496 + ... + 17512521.

It is an arithmetic number, because the mean of its divisors is an integer number (122587563).

Almost surely, 2^455325221 is an apocalyptic number.

It is an amenable number.

455325221 is a deficient number, since it is larger than the sum of its proper divisors (35025031).

455325221 is a wasteful number, since it uses less digits than its factorization.

455325221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35025030.

The product of its digits is 12000, while the sum is 29.

The square root of 455325221 is about 21338.3509437819. The cubic root of 455325221 is about 769.3203768784.

Adding to 455325221 its reverse (122523554), we get a palindrome (577848775).

The spelling of 455325221 in words is "four hundred fifty-five million, three hundred twenty-five thousand, two hundred twenty-one".