5205304121 has 2 divisors, whose sum is σ = 5205304122. Its totient is φ = 5205304120.

The previous prime is 5205304079. The next prime is 5205304127. The reversal of 5205304121 is 1214035025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4679244025 + 526060096 = 68405^2 + 22936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5205304121 is a prime.

It is not a weakly prime, because it can be changed into another prime (5205304127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2602652060 + 2602652061.

It is an arithmetic number, because the mean of its divisors is an integer number (2602652061).

Almost surely, 2^5205304121 is an apocalyptic number.

It is an amenable number.

5205304121 is a deficient number, since it is larger than the sum of its proper divisors (1).

5205304121 is an equidigital number, since it uses as much as digits as its factorization.

5205304121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 5205304121 is about 72147.7935975869. The cubic root of 5205304121 is about 1733.0670665410.

Adding to 5205304121 its reverse (1214035025), we get a palindrome (6419339146).

The spelling of 5205304121 in words is "five billion, two hundred five million, three hundred four thousand, one hundred twenty-one".