5321255521 has 2 divisors, whose sum is σ = 5321255522. Its totient is φ = 5321255520.

The previous prime is 5321255507. The next prime is 5321255543. The reversal of 5321255521 is 1255521235.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2874568225 + 2446687296 = 53615^2 + 49464^2 .

It is a cyclic number.

It is not a de Polignac number, because 5321255521 - 2⁷ = 5321255393 is a prime.

It is not a weakly prime, because it can be changed into another prime (5321255591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2660627760 + 2660627761.

It is an arithmetic number, because the mean of its divisors is an integer number (2660627761).

Almost surely, 2^5321255521 is an apocalyptic number.

It is an amenable number.

5321255521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5321255521 is an equidigital number, since it uses as much as digits as its factorization.

5321255521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15000, while the sum is 31.

The square root of 5321255521 is about 72946.9363373130. The cubic root of 5321255521 is about 1745.8410650396.

Adding to 5321255521 its reverse (1255521235), we get a palindrome (6576776756).

The spelling of 5321255521 in words is "five billion, three hundred twenty-one million, two hundred fifty-five thousand, five hundred twenty-one".