455500221 has 16 divisors (see below), whose sum is σ = 662991168. Its totient is φ = 275875200.

The previous prime is 455500219. The next prime is 455500271. The reversal of 455500221 is 122005554.

It is a happy number.

It is not a de Polignac number, because 455500221 - 2¹ = 455500219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 455500191 and 455500200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455500271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57705 + ... + 65121.

It is an arithmetic number, because the mean of its divisors is an integer number (41436948).

Almost surely, 2^455500221 is an apocalyptic number.

It is an amenable number.

455500221 is a deficient number, since it is larger than the sum of its proper divisors (207490947).

455500221 is a wasteful number, since it uses less digits than its factorization.

455500221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9292.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 455500221 is about 21342.4511478883. The cubic root of 455500221 is about 769.4189246236.

Adding to 455500221 its reverse (122005554), we get a palindrome (577505775).

The spelling of 455500221 in words is "four hundred fifty-five million, five hundred thousand, two hundred twenty-one".