217533053 has 2 divisors, whose sum is σ = 217533054. Its totient is φ = 217533052.

The previous prime is 217532977. The next prime is 217533067. The reversal of 217533053 is 350335712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183927844 + 33605209 = 13562^2 + 5797^2 .

It is a cyclic number.

It is not a de Polignac number, because 217533053 - 2¹⁴ = 217516669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (217533083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108766526 + 108766527.

It is an arithmetic number, because the mean of its divisors is an integer number (108766527).

Almost surely, 2^217533053 is an apocalyptic number.

It is an amenable number.

217533053 is a deficient number, since it is larger than the sum of its proper divisors (1).

217533053 is an equidigital number, since it uses as much as digits as its factorization.

217533053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9450, while the sum is 29.

The square root of 217533053 is about 14749.0017628313. The cubic root of 217533053 is about 601.4161484282.

Adding to 217533053 its reverse (350335712), we get a palindrome (567868765).

The spelling of 217533053 in words is "two hundred seventeen million, five hundred thirty-three thousand, fifty-three".