545221210404 has 48 divisors (see below), whose sum is σ = 1370182766400. Its totient is φ = 167743263360.

The previous prime is 545221210403. The next prime is 545221210427. The reversal of 545221210404 is 404012122545.

It is not an unprimeable number, because it can be changed into a prime (545221210403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1401022 + ... + 1747370.

It is an arithmetic number, because the mean of its divisors is an integer number (28545474300).

Almost surely, 2^545221210404 is an apocalyptic number.

It is an amenable number.

545221210404 is an abundant number, since it is smaller than the sum of its proper divisors (824961555996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

545221210404 is a wasteful number, since it uses less digits than its factorization.

545221210404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356460 (or 356458 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 545221210404 its reverse (404012122545), we get a palindrome (949233332949).

The spelling of 545221210404 in words is "five hundred forty-five billion, two hundred twenty-one million, two hundred ten thousand, four hundred four".