217119953 has 2 divisors, whose sum is σ = 217119954. Its totient is φ = 217119952.

The previous prime is 217119919. The next prime is 217119967. The reversal of 217119953 is 359911712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152349649 + 64770304 = 12343^2 + 8048^2 .

It is a cyclic number.

It is not a de Polignac number, because 217119953 - 2¹⁶ = 217054417 is a prime.

It is not a weakly prime, because it can be changed into another prime (217119653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108559976 + 108559977.

It is an arithmetic number, because the mean of its divisors is an integer number (108559977).

Almost surely, 2^217119953 is an apocalyptic number.

It is an amenable number.

217119953 is a deficient number, since it is larger than the sum of its proper divisors (1).

217119953 is an equidigital number, since it uses as much as digits as its factorization.

217119953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 38.

The square root of 217119953 is about 14734.9907702720. The cubic root of 217119953 is about 601.0352064041.

The spelling of 217119953 in words is "two hundred seventeen million, one hundred nineteen thousand, nine hundred fifty-three".