5202202151621 has 2 divisors, whose sum is σ = 5202202151622. Its totient is φ = 5202202151620.

The previous prime is 5202202151609. The next prime is 5202202151633. The reversal of 5202202151621 is 1261512022025.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (5202202151609) and next prime (5202202151633).

It can be written as a sum of positive squares in only one way, i.e., 4618368623521 + 583833528100 = 2149039^2 + 764090^2 .

It is a cyclic number.

It is not a de Polignac number, because 5202202151621 - 2¹⁰ = 5202202150597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5202202151651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2601101075810 + 2601101075811.

It is an arithmetic number, because the mean of its divisors is an integer number (2601101075811).

Almost surely, 2^{5202202151621} is an apocalyptic number.

It is an amenable number.

5202202151621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5202202151621 is an equidigital number, since it uses as much as digits as its factorization.

5202202151621 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 29.

Adding to 5202202151621 its reverse (1261512022025), we get a palindrome (6463714173646).

The spelling of 5202202151621 in words is "five trillion, two hundred two billion, two hundred two million, one hundred fifty-one thousand, six hundred twenty-one".