36528221 has 2 divisors, whose sum is σ = 36528222. Its totient is φ = 36528220.

The previous prime is 36528211. The next prime is 36528277. The reversal of 36528221 is 12282563.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35402500 + 1125721 = 5950^2 + 1061^2 .

It is a cyclic number.

It is not a de Polignac number, because 36528221 - 2⁶ = 36528157 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36528211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18264110 + 18264111.

It is an arithmetic number, because the mean of its divisors is an integer number (18264111).

Almost surely, 2^36528221 is an apocalyptic number.

It is an amenable number.

36528221 is a deficient number, since it is larger than the sum of its proper divisors (1).

36528221 is an equidigital number, since it uses as much as digits as its factorization.

36528221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 29.

The square root of 36528221 is about 6043.8581220939. The cubic root of 36528221 is about 331.7998412468.

The spelling of 36528221 in words is "thirty-six million, five hundred twenty-eight thousand, two hundred twenty-one".