5224501621 has 2 divisors, whose sum is σ = 5224501622. Its totient is φ = 5224501620.

The previous prime is 5224501609. The next prime is 5224501657. The reversal of 5224501621 is 1261054225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3558719025 + 1665782596 = 59655^2 + 40814^2 .

It is a cyclic number.

It is not a de Polignac number, because 5224501621 - 2¹⁹ = 5223977333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5224501621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5224501691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2612250810 + 2612250811.

It is an arithmetic number, because the mean of its divisors is an integer number (2612250811).

Almost surely, 2^5224501621 is an apocalyptic number.

It is an amenable number.

5224501621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5224501621 is an equidigital number, since it uses as much as digits as its factorization.

5224501621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 5224501621 is about 72280.7140321677. The cubic root of 5224501621 is about 1735.1950073563.

Adding to 5224501621 its reverse (1261054225), we get a palindrome (6485555846).

The spelling of 5224501621 in words is "five billion, two hundred twenty-four million, five hundred one thousand, six hundred twenty-one".