5235525721 has 2 divisors, whose sum is σ = 5235525722. Its totient is φ = 5235525720.

The previous prime is 5235525707. The next prime is 5235525733. The reversal of 5235525721 is 1275255325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5060757321 + 174768400 = 71139^2 + 13220^2 .

It is a cyclic number.

It is not a de Polignac number, because 5235525721 - 2⁵ = 5235525689 is a prime.

It is not a weakly prime, because it can be changed into another prime (5235525761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2617762860 + 2617762861.

It is an arithmetic number, because the mean of its divisors is an integer number (2617762861).

Almost surely, 2^5235525721 is an apocalyptic number.

It is an amenable number.

5235525721 is a deficient number, since it is larger than the sum of its proper divisors (1).

5235525721 is an equidigital number, since it uses as much as digits as its factorization.

5235525721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105000, while the sum is 37.

The square root of 5235525721 is about 72356.9327777235. The cubic root of 5235525721 is about 1736.4146148832.

The spelling of 5235525721 in words is "five billion, two hundred thirty-five million, five hundred twenty-five thousand, seven hundred twenty-one".