721200050 has 12 divisors (see below), whose sum is σ = 1341432186. Its totient is φ = 288480000.

The previous prime is 721200047. The next prime is 721200059. The reversal of 721200050 is 50002127.

It can be written as a sum of positive squares in 3 ways, for example, as 262083721 + 459116329 = 16189^2 + 21427^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (721200059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7211951 + ... + 7212050.

Almost surely, 2^721200050 is an apocalyptic number.

721200050 is a deficient number, since it is larger than the sum of its proper divisors (620232136).

721200050 is a wasteful number, since it uses less digits than its factorization.

721200050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14424013 (or 14424008 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 721200050 is about 26855.1680314981. The cubic root of 721200050 is about 896.7786275223.

Adding to 721200050 its reverse (50002127), we get a palindrome (771202177).

The spelling of 721200050 in words is "seven hundred twenty-one million, two hundred thousand, fifty".