1771223 has 2 divisors, whose sum is σ = 1771224. Its totient is φ = 1771222.

The previous prime is 1771201. The next prime is 1771261. The reversal of 1771223 is 3221771.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1771223 - 2¹⁰ = 1770199 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1771283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 885611 + 885612.

It is an arithmetic number, because the mean of its divisors is an integer number (885612).

2^1771223 is an apocalyptic number.

1771223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1771223 is an equidigital number, since it uses as much as digits as its factorization.

1771223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 588, while the sum is 23.

The square root of 1771223 is about 1330.8730217417. The cubic root of 1771223 is about 120.9923042256.

Adding to 1771223 its reverse (3221771), we get a palindrome (4992994).

The spelling of 1771223 in words is "one million, seven hundred seventy-one thousand, two hundred twenty-three".