5260221361 has 4 divisors (see below), whose sum is σ = 5261841652. Its totient is φ = 5258601072.

The previous prime is 5260221313. The next prime is 5260221397. The reversal of 5260221361 is 1631220625.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5048955136 + 211266225 = 71056^2 + 14535^2 .

It is a cyclic number.

It is not a de Polignac number, because 5260221361 - 2¹⁷ = 5260090289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5260221301) 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, 805266 + ... + 811771.

It is an arithmetic number, because the mean of its divisors is an integer number (1315460413).

Almost surely, 2^5260221361 is an apocalyptic number.

It is an amenable number.

5260221361 is a deficient number, since it is larger than the sum of its proper divisors (1620291).

5260221361 is a wasteful number, since it uses less digits than its factorization.

5260221361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620290.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 5260221361 is about 72527.3835251210. The cubic root of 5260221361 is about 1739.1405189568.

Adding to 5260221361 its reverse (1631220625), we get a palindrome (6891441986).

The spelling of 5260221361 in words is "five billion, two hundred sixty million, two hundred twenty-one thousand, three hundred sixty-one".