5260251221 has 2 divisors, whose sum is σ = 5260251222. Its totient is φ = 5260251220.

The previous prime is 5260251203. The next prime is 5260251253. The reversal of 5260251221 is 1221520625.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2882616100 + 2377635121 = 53690^2 + 48761^2 .

It is a cyclic number.

It is not a de Polignac number, because 5260251221 - 2²² = 5256056917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5260251721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2630125610 + 2630125611.

It is an arithmetic number, because the mean of its divisors is an integer number (2630125611).

Almost surely, 2^5260251221 is an apocalyptic number.

It is an amenable number.

5260251221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5260251221 is an equidigital number, since it uses as much as digits as its factorization.

5260251221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 5260251221 is about 72527.5893781118. The cubic root of 5260251221 is about 1739.1438097333.

Adding to 5260251221 its reverse (1221520625), we get a palindrome (6481771846).

It can be divided in two parts, 52602 and 51221, that added together give a cube (103823 = 47³).

The spelling of 5260251221 in words is "five billion, two hundred sixty million, two hundred fifty-one thousand, two hundred twenty-one".