1772213 has 2 divisors, whose sum is σ = 1772214. Its totient is φ = 1772212.

The previous prime is 1772209. The next prime is 1772227. The reversal of 1772213 is 3122771.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1385329 + 386884 = 1177^2 + 622^2 .

It is an emirp because it is prime and its reverse (3122771) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1772213 - 2² = 1772209 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1772273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 886106 + 886107.

It is an arithmetic number, because the mean of its divisors is an integer number (886107).

2^1772213 is an apocalyptic number.

It is an amenable number.

1772213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1772213 is an equidigital number, since it uses as much as digits as its factorization.

1772213 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1772213 is about 1331.2449060935. The cubic root of 1772213 is about 121.0148423384.

Adding to 1772213 its reverse (3122771), we get a palindrome (4894984).

The spelling of 1772213 in words is "one million, seven hundred seventy-two thousand, two hundred thirteen".