36520213 has 2 divisors, whose sum is σ = 36520214. Its totient is φ = 36520212.

The previous prime is 36520207. The next prime is 36520243. The reversal of 36520213 is 31202563.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28121809 + 8398404 = 5303^2 + 2898^2 .

It is a cyclic number.

It is not a de Polignac number, because 36520213 - 2⁵ = 36520181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36520243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18260106 + 18260107.

It is an arithmetic number, because the mean of its divisors is an integer number (18260107).

Almost surely, 2^36520213 is an apocalyptic number.

It is an amenable number.

36520213 is a deficient number, since it is larger than the sum of its proper divisors (1).

36520213 is an equidigital number, since it uses as much as digits as its factorization.

36520213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 36520213 is about 6043.1955950474. The cubic root of 36520213 is about 331.7755928962.

Adding to 36520213 its reverse (31202563), we get a palindrome (67722776).

The spelling of 36520213 in words is "thirty-six million, five hundred twenty thousand, two hundred thirteen".