965385521 has 2 divisors, whose sum is σ = 965385522. Its totient is φ = 965385520.

The previous prime is 965385503. The next prime is 965385527. The reversal of 965385521 is 125583569.

965385521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 564585121 + 400800400 = 23761^2 + 20020^2 .

It is a cyclic number.

It is not a de Polignac number, because 965385521 - 2¹⁴ = 965369137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (965385527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 482692760 + 482692761.

It is an arithmetic number, because the mean of its divisors is an integer number (482692761).

Almost surely, 2^965385521 is an apocalyptic number.

It is an amenable number.

965385521 is a deficient number, since it is larger than the sum of its proper divisors (1).

965385521 is an equidigital number, since it uses as much as digits as its factorization.

965385521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324000, while the sum is 44.

The square root of 965385521 is about 31070.6536944429. The cubic root of 965385521 is about 988.3260904772.

The spelling of 965385521 in words is "nine hundred sixty-five million, three hundred eighty-five thousand, five hundred twenty-one".