454554243221 has 16 divisors (see below), whose sum is σ = 506587749360. Its totient is φ = 404969725440.

The previous prime is 454554243211. The next prime is 454554243239. The reversal of 454554243221 is 122342455454.

It can be written as a sum of positive squares in 8 ways, for example, as 29065476196 + 425488767025 = 170486^2 + 652295^2 .

It is a cyclic number.

It is not a de Polignac number, because 454554243221 - 2²² = 454550048917 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 (454554243211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 800591 + ... + 1245011.

It is an arithmetic number, because the mean of its divisors is an integer number (31661734335).

Almost surely, 2^454554243221 is an apocalyptic number.

It is an amenable number.

454554243221 is a deficient number, since it is larger than the sum of its proper divisors (52033506139).

454554243221 is a wasteful number, since it uses less digits than its factorization.

454554243221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447176.

The product of its digits is 768000, while the sum is 41.

Adding to 454554243221 its reverse (122342455454), we get a palindrome (576896698675).

The spelling of 454554243221 in words is "four hundred fifty-four billion, five hundred fifty-four million, two hundred forty-three thousand, two hundred twenty-one".