545221223010 has 320 divisors, whose sum is σ = 1547067725280. Its totient is φ = 137594142720.

The previous prime is 545221222967. The next prime is 545221223023. The reversal of 545221223010 is 10322122545.

545221223010 is a `hidden beast` number, since 5 + 4 + 522 + 122 + 3 + 0 + 10 = 666.

It can be written as a sum of positive squares in 16 ways, for example, as 155556881649 + 389664341361 = 394407^2 + 624231^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

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 159 ways as a sum of consecutive naturals, for example, 708999906 + ... + 709000674.

Almost surely, 2^545221223010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545221223010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (773533862640).

545221223010 is an abundant number, since it is smaller than the sum of its proper divisors (1001846502270).

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

545221223010 is a wasteful number, since it uses less digits than its factorization.

545221223010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443 (or 1434 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 545221223010 its reverse (10322122545), we get a palindrome (555543345555).

The spelling of 545221223010 in words is "five hundred forty-five billion, two hundred twenty-one million, two hundred twenty-three thousand, ten".