217114057 has 2 divisors, whose sum is σ = 217114058. Its totient is φ = 217114056.

The previous prime is 217114013. The next prime is 217114081. The reversal of 217114057 is 750411712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185259321 + 31854736 = 13611^2 + 5644^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-217114057 is a prime.

It is not a weakly prime, because it can be changed into another prime (217112057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108557028 + 108557029.

It is an arithmetic number, because the mean of its divisors is an integer number (108557029).

Almost surely, 2^217114057 is an apocalyptic number.

It is an amenable number.

217114057 is a deficient number, since it is larger than the sum of its proper divisors (1).

217114057 is an equidigital number, since it uses as much as digits as its factorization.

217114057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1960, while the sum is 28.

The square root of 217114057 is about 14734.7907009228. The cubic root of 217114057 is about 601.0297658852.

Adding to 217114057 its reverse (750411712), we get a palindrome (967525769).

The spelling of 217114057 in words is "two hundred seventeen million, one hundred fourteen thousand, fifty-seven".