721002052 has 12 divisors (see below), whose sum is σ = 1261942416. Its totient is φ = 360447080.

The previous prime is 721002049. The next prime is 721002109. The reversal of 721002052 is 250200127.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41427 + ... + 56197.

It is an arithmetic number, because the mean of its divisors is an integer number (105161868).

Almost surely, 2^721002052 is an apocalyptic number.

It is an amenable number.

721002052 is a deficient number, since it is larger than the sum of its proper divisors (540940364).

721002052 is a wasteful number, since it uses less digits than its factorization.

721002052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26978 (or 26976 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 721002052 is about 26851.4813744047. The cubic root of 721002052 is about 896.6965529180.

Adding to 721002052 its reverse (250200127), we get a palindrome (971202179).

The spelling of 721002052 in words is "seven hundred twenty-one million, two thousand, fifty-two".