5210622721 has 4 divisors (see below), whose sum is σ = 5273401392. Its totient is φ = 5147844052.

The previous prime is 5210622707. The next prime is 5210622731. The reversal of 5210622721 is 1272260125.

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-5210622721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5210622721.

It is not an unprimeable number, because it can be changed into a prime (5210622731) 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, 31389211 + ... + 31389376.

It is an arithmetic number, because the mean of its divisors is an integer number (1318350348).

Almost surely, 2^5210622721 is an apocalyptic number.

It is an amenable number.

5210622721 is a deficient number, since it is larger than the sum of its proper divisors (62778671).

5210622721 is an equidigital number, since it uses as much as digits as its factorization.

5210622721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62778670.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 5210622721 is about 72184.6432491011. The cubic root of 5210622721 is about 1733.6571283124.

Adding to 5210622721 its reverse (1272260125), we get a palindrome (6482882846).

The spelling of 5210622721 in words is "five billion, two hundred ten million, six hundred twenty-two thousand, seven hundred twenty-one".