2047217 has 2 divisors, whose sum is σ = 2047218. Its totient is φ = 2047216.

The previous prime is 2047211. The next prime is 2047219. The reversal of 2047217 is 7127402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1874161 + 173056 = 1369^2 + 416^2 .

It is a cyclic number.

It is not a de Polignac number, because 2047217 - 2¹⁰ = 2046193 is a prime.

Together with 2047219, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2047192 and 2047201.

It is not a weakly prime, because it can be changed into another prime (2047211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1023608 + 1023609.

It is an arithmetic number, because the mean of its divisors is an integer number (1023609).

2^2047217 is an apocalyptic number.

It is an amenable number.

2047217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2047217 is an equidigital number, since it uses as much as digits as its factorization.

2047217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 2047217 is about 1430.8099105052. The cubic root of 2047217 is about 126.9758980447.

The spelling of 2047217 in words is "two million, forty-seven thousand, two hundred seventeen".