5211721604 has 24 divisors (see below), whose sum is σ = 9425051328. Its totient is φ = 2520050400.

The previous prime is 5211721591. The next prime is 5211721607. The reversal of 5211721604 is 4061271125.

It is not an unprimeable number, because it can be changed into a prime (5211721607) 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, 132632 + ... + 167375.

It is an arithmetic number, because the mean of its divisors is an integer number (392710472).

Almost surely, 2^5211721604 is an apocalyptic number.

It is an amenable number.

5211721604 is a deficient number, since it is larger than the sum of its proper divisors (4213329724).

5211721604 is a wasteful number, since it uses less digits than its factorization.

5211721604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300155 (or 300153 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 5211721604 is about 72192.2544598796. The cubic root of 5211721604 is about 1733.7789917019.

Adding to 5211721604 its reverse (4061271125), we get a palindrome (9272992729).

The spelling of 5211721604 in words is "five billion, two hundred eleven million, seven hundred twenty-one thousand, six hundred four".