217053101 has 2 divisors, whose sum is σ = 217053102. Its totient is φ = 217053100.

The previous prime is 217053079. The next prime is 217053113. The reversal of 217053101 is 101350712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 216855076 + 198025 = 14726^2 + 445^2 .

It is a cyclic number.

It is not a de Polignac number, because 217053101 - 2⁶ = 217053037 is a prime.

It is a super-2 number, since 2×217053101² = 94224097307432402, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (217053901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108526550 + 108526551.

It is an arithmetic number, because the mean of its divisors is an integer number (108526551).

Almost surely, 2^217053101 is an apocalyptic number.

It is an amenable number.

217053101 is a deficient number, since it is larger than the sum of its proper divisors (1).

217053101 is an equidigital number, since it uses as much as digits as its factorization.

217053101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 217053101 is about 14732.7221177894. The cubic root of 217053101 is about 600.9735131179.

The spelling of 217053101 in words is "two hundred seventeen million, fifty-three thousand, one hundred one".