2171017 has 2 divisors, whose sum is σ = 2171018. Its totient is φ = 2171016.

The previous prime is 2171011. The next prime is 2171021. The reversal of 2171017 is 7101712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1679616 + 491401 = 1296^2 + 701^2 .

It is a cyclic number.

It is not a de Polignac number, because 2171017 - 2¹⁵ = 2138249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2170985 and 2171003.

It is not a weakly prime, because it can be changed into another prime (2171011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085508 + 1085509.

It is an arithmetic number, because the mean of its divisors is an integer number (1085509).

2^2171017 is an apocalyptic number.

It is an amenable number.

2171017 is a deficient number, since it is larger than the sum of its proper divisors (1).

2171017 is an equidigital number, since it uses as much as digits as its factorization.

2171017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98, while the sum is 19.

The square root of 2171017 is about 1473.4371381230. The cubic root of 2171017 is about 129.4854810971.

Adding to 2171017 its reverse (7101712), we get a palindrome (9272729).

The spelling of 2171017 in words is "two million, one hundred seventy-one thousand, seventeen".