36521993 has 2 divisors, whose sum is σ = 36521994. Its totient is φ = 36521992.

The previous prime is 36521983. The next prime is 36522011. The reversal of 36521993 is 39912563.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32569849 + 3952144 = 5707^2 + 1988^2 .

It is a cyclic number.

It is not a de Polignac number, because 36521993 - 2⁴ = 36521977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (36521963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18260996 + 18260997.

It is an arithmetic number, because the mean of its divisors is an integer number (18260997).

Almost surely, 2^36521993 is an apocalyptic number.

It is an amenable number.

36521993 is a deficient number, since it is larger than the sum of its proper divisors (1).

36521993 is an equidigital number, since it uses as much as digits as its factorization.

36521993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43740, while the sum is 38.

The square root of 36521993 is about 6043.3428663282. The cubic root of 36521993 is about 331.7809830707.

The spelling of 36521993 in words is "thirty-six million, five hundred twenty-one thousand, nine hundred ninety-three".