216059513 has 2 divisors, whose sum is σ = 216059514. Its totient is φ = 216059512.

The previous prime is 216059369. The next prime is 216059521. The reversal of 216059513 is 315950612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146119744 + 69939769 = 12088^2 + 8363^2 .

It is a cyclic number.

It is not a de Polignac number, because 216059513 - 2¹⁸ = 215797369 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 216059513.

It is not a weakly prime, because it can be changed into another prime (216059573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108029756 + 108029757.

It is an arithmetic number, because the mean of its divisors is an integer number (108029757).

Almost surely, 2^216059513 is an apocalyptic number.

It is an amenable number.

216059513 is a deficient number, since it is larger than the sum of its proper divisors (1).

216059513 is an equidigital number, since it uses as much as digits as its factorization.

216059513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 216059513 is about 14698.9629906330. The cubic root of 216059513 is about 600.0550995695.

The spelling of 216059513 in words is "two hundred sixteen million, fifty-nine thousand, five hundred thirteen".