217096853 has 2 divisors, whose sum is σ = 217096854. Its totient is φ = 217096852.

The previous prime is 217096849. The next prime is 217096879. The reversal of 217096853 is 358690712.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134050084 + 83046769 = 11578^2 + 9113^2 .

It is a cyclic number.

It is not a de Polignac number, because 217096853 - 2² = 217096849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 217096853.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (217096823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108548426 + 108548427.

It is an arithmetic number, because the mean of its divisors is an integer number (108548427).

Almost surely, 2^217096853 is an apocalyptic number.

It is an amenable number.

217096853 is a deficient number, since it is larger than the sum of its proper divisors (1).

217096853 is an equidigital number, since it uses as much as digits as its factorization.

217096853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 217096853 is about 14734.2069009499. The cubic root of 217096853 is about 601.0138903751.

The spelling of 217096853 in words is "two hundred seventeen million, ninety-six thousand, eight hundred fifty-three".