217717483 has 2 divisors, whose sum is σ = 217717484. Its totient is φ = 217717482.

The previous prime is 217717469. The next prime is 217717543. The reversal of 217717483 is 384717712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 217717483 - 2¹³ = 217709291 is a prime.

It is not a weakly prime, because it can be changed into another prime (217717403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108858741 + 108858742.

It is an arithmetic number, because the mean of its divisors is an integer number (108858742).

Almost surely, 2^217717483 is an apocalyptic number.

217717483 is a deficient number, since it is larger than the sum of its proper divisors (1).

217717483 is an equidigital number, since it uses as much as digits as its factorization.

217717483 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65856, while the sum is 40.

The square root of 217717483 is about 14755.2527257245. The cubic root of 217717483 is about 601.5860656688.

The spelling of 217717483 in words is "two hundred seventeen million, seven hundred seventeen thousand, four hundred eighty-three".