36189521 has 2 divisors, whose sum is σ = 36189522. Its totient is φ = 36189520.

The previous prime is 36189499. The next prime is 36189529. The reversal of 36189521 is 12598163.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20349121 + 15840400 = 4511^2 + 3980^2 .

It is an emirp because it is prime and its reverse (12598163) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36189521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (36189529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18094760 + 18094761.

It is an arithmetic number, because the mean of its divisors is an integer number (18094761).

Almost surely, 2^36189521 is an apocalyptic number.

It is an amenable number.

36189521 is a deficient number, since it is larger than the sum of its proper divisors (1).

36189521 is an equidigital number, since it uses as much as digits as its factorization.

36189521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 35.

The square root of 36189521 is about 6015.7726852001. The cubic root of 36189521 is about 330.7711411977.

The spelling of 36189521 in words is "thirty-six million, one hundred eighty-nine thousand, five hundred twenty-one".