5210711621 has 4 divisors (see below), whose sum is σ = 5210898144. Its totient is φ = 5210525100.

The previous prime is 5210711581. The next prime is 5210711641. The reversal of 5210711621 is 1261170125.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5210711621 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 (5210711641) 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, 41945 + ... + 110366.

It is an arithmetic number, because the mean of its divisors is an integer number (1302724536).

Almost surely, 2^5210711621 is an apocalyptic number.

It is an amenable number.

5210711621 is a deficient number, since it is larger than the sum of its proper divisors (186523).

5210711621 is a wasteful number, since it uses less digits than its factorization.

5210711621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186522.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 5210711621 is about 72185.2590284194. The cubic root of 5210711621 is about 1733.6669877380. Note that the first 3 decimals are identical.

Adding to 5210711621 its reverse (1261170125), we get a palindrome (6471881746).

The spelling of 5210711621 in words is "five billion, two hundred ten million, seven hundred eleven thousand, six hundred twenty-one".