5281568129 has 2 divisors, whose sum is σ = 5281568130. Its totient is φ = 5281568128.

The previous prime is 5281568113. The next prime is 5281568191. The reversal of 5281568129 is 9218651825.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3522185104 + 1759383025 = 59348^2 + 41945^2 .

It is a cyclic number.

It is not a de Polignac number, because 5281568129 - 2⁴ = 5281568113 is a prime.

It is not a weakly prime, because it can be changed into another prime (5281568329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2640784064 + 2640784065.

It is an arithmetic number, because the mean of its divisors is an integer number (2640784065).

Almost surely, 2^5281568129 is an apocalyptic number.

It is an amenable number.

5281568129 is a deficient number, since it is larger than the sum of its proper divisors (1).

5281568129 is an equidigital number, since it uses as much as digits as its factorization.

5281568129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 47.

The square root of 5281568129 is about 72674.3980298427. The cubic root of 5281568129 is about 1741.4899082000.

The spelling of 5281568129 in words is "five billion, two hundred eighty-one million, five hundred sixty-eight thousand, one hundred twenty-nine".