36565021 has 2 divisors, whose sum is σ = 36565022. Its totient is φ = 36565020.

The previous prime is 36564971. The next prime is 36565037. The reversal of 36565021 is 12056563.

36565021 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., 22231225 + 14333796 = 4715^2 + 3786^2 .

It is a cyclic number.

It is not a de Polignac number, because 36565021 - 2⁷ = 36564893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36565051) 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, 18282510 + 18282511.

It is an arithmetic number, because the mean of its divisors is an integer number (18282511).

Almost surely, 2^36565021 is an apocalyptic number.

It is an amenable number.

36565021 is a deficient number, since it is larger than the sum of its proper divisors (1).

36565021 is an equidigital number, since it uses as much as digits as its factorization.

36565021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 36565021 is about 6046.9017686746. The cubic root of 36565021 is about 331.9112266884.

The spelling of 36565021 in words is "thirty-six million, five hundred sixty-five thousand, twenty-one".