721201052 has 24 divisors (see below), whose sum is σ = 1482750192. Its totient is φ = 302601600.

The previous prime is 721201037. The next prime is 721201057. The reversal of 721201052 is 250102127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721201057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 629849 + ... + 630992.

It is an arithmetic number, because the mean of its divisors is an integer number (61781258).

Almost surely, 2^721201052 is an apocalyptic number.

It is an amenable number.

721201052 is an abundant number, since it is smaller than the sum of its proper divisors (761549140).

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

721201052 is a wasteful number, since it uses less digits than its factorization.

721201052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260869 (or 1260867 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 721201052 is about 26855.1866871187. The cubic root of 721201052 is about 896.7790428355.

Adding to 721201052 its reverse (250102127), we get a palindrome (971303179).

The spelling of 721201052 in words is "seven hundred twenty-one million, two hundred one thousand, fifty-two".