5105255921 has 2 divisors, whose sum is σ = 5105255922. Its totient is φ = 5105255920.

The previous prime is 5105255867. The next prime is 5105255933. The reversal of 5105255921 is 1295525015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2844728896 + 2260527025 = 53336^2 + 47545^2 .

It is a cyclic number.

It is not a de Polignac number, because 5105255921 - 2¹⁰ = 5105254897 is a prime.

It is not a weakly prime, because it can be changed into another prime (5105255971) 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, 2552627960 + 2552627961.

It is an arithmetic number, because the mean of its divisors is an integer number (2552627961).

Almost surely, 2^5105255921 is an apocalyptic number.

It is an amenable number.

5105255921 is a deficient number, since it is larger than the sum of its proper divisors (1).

5105255921 is an equidigital number, since it uses as much as digits as its factorization.

5105255921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22500, while the sum is 35.

The square root of 5105255921 is about 71451.0736168464. The cubic root of 5105255921 is about 1721.8917262157.

The spelling of 5105255921 in words is "five billion, one hundred five million, two hundred fifty-five thousand, nine hundred twenty-one".