2217773 has 2 divisors, whose sum is σ = 2217774. Its totient is φ = 2217772.

The previous prime is 2217757. The next prime is 2217779. The reversal of 2217773 is 3777122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1582564 + 635209 = 1258^2 + 797^2 .

It is a cyclic number.

It is not a de Polignac number, because 2217773 - 2⁴ = 2217757 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2⁹ + 2²¹ + 1 + 7² + 7⁴ + 7⁶ + 3² .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2217779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108886 + 1108887.

It is an arithmetic number, because the mean of its divisors is an integer number (1108887).

2^2217773 is an apocalyptic number.

It is an amenable number.

2217773 is a deficient number, since it is larger than the sum of its proper divisors (1).

2217773 is an equidigital number, since it uses as much as digits as its factorization.

2217773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4116, while the sum is 29.

The square root of 2217773 is about 1489.2189227914. The cubic root of 2217773 is about 130.4084392709.

The spelling of 2217773 in words is "two million, two hundred seventeen thousand, seven hundred seventy-three".