5207687621 has 4 divisors (see below), whose sum is σ = 5305945932. Its totient is φ = 5109429312.

The previous prime is 5207687593. The next prime is 5207687677. The reversal of 5207687621 is 1267867025.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1706598721 + 3501088900 = 41311^2 + 59170^2 .

It is a cyclic number.

It is not a de Polignac number, because 5207687621 - 2¹⁰ = 5207686597 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 (5207687321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49129076 + ... + 49129181.

It is an arithmetic number, because the mean of its divisors is an integer number (1326486483).

Almost surely, 2^5207687621 is an apocalyptic number.

It is an amenable number.

5207687621 is a deficient number, since it is larger than the sum of its proper divisors (98258311).

5207687621 is an equidigital number, since it uses as much as digits as its factorization.

5207687621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98258310.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 5207687621 is about 72164.3098837646. The cubic root of 5207687621 is about 1733.3315490079.

The spelling of 5207687621 in words is "five billion, two hundred seven million, six hundred eighty-seven thousand, six hundred twenty-one".