5208737821 has 16 divisors (see below), whose sum is σ = 6175353600. Its totient is φ = 4298611968.

The previous prime is 5208737801. The next prime is 5208737827. The reversal of 5208737821 is 1287378025.

It is not a de Polignac number, because 5208737821 - 2¹⁹ = 5208213533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5208737827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37141 + ... + 108613.

It is an arithmetic number, because the mean of its divisors is an integer number (385959600).

Almost surely, 2^5208737821 is an apocalyptic number.

It is an amenable number.

5208737821 is a deficient number, since it is larger than the sum of its proper divisors (966615779).

5208737821 is a wasteful number, since it uses less digits than its factorization.

5208737821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71868.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 5208737821 is about 72171.5859670549. The cubic root of 5208737821 is about 1733.4480576884.

The spelling of 5208737821 in words is "five billion, two hundred eight million, seven hundred thirty-seven thousand, eight hundred twenty-one".