5162571721 has 2 divisors, whose sum is σ = 5162571722. Its totient is φ = 5162571720.

The previous prime is 5162571691. The next prime is 5162571727. The reversal of 5162571721 is 1271752615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2922916096 + 2239655625 = 54064^2 + 47325^2 .

It is a cyclic number.

It is not a de Polignac number, because 5162571721 - 2²⁹ = 4625700809 is a prime.

It is not a weakly prime, because it can be changed into another prime (5162571727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2581285860 + 2581285861.

It is an arithmetic number, because the mean of its divisors is an integer number (2581285861).

Almost surely, 2^5162571721 is an apocalyptic number.

It is an amenable number.

5162571721 is a deficient number, since it is larger than the sum of its proper divisors (1).

5162571721 is an equidigital number, since it uses as much as digits as its factorization.

5162571721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29400, while the sum is 37.

The square root of 5162571721 is about 71851.0384128163. The cubic root of 5162571721 is about 1728.3115517685.

The spelling of 5162571721 in words is "five billion, one hundred sixty-two million, five hundred seventy-one thousand, seven hundred twenty-one".