2091773 has 2 divisors, whose sum is σ = 2091774. Its totient is φ = 2091772.

The previous prime is 2091769. The next prime is 2091797. The reversal of 2091773 is 3771902.

It is a happy number.

2091773 is nontrivially palindromic in base 4.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1085764 + 1006009 = 1042^2 + 1003^2 .

It is a cyclic number.

It is not a de Polignac number, because 2091773 - 2² = 2091769 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2091703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045886 + 1045887.

It is an arithmetic number, because the mean of its divisors is an integer number (1045887).

2^2091773 is an apocalyptic number.

It is an amenable number.

2091773 is a deficient number, since it is larger than the sum of its proper divisors (1).

2091773 is an equidigital number, since it uses as much as digits as its factorization.

2091773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 2091773 is about 1446.2963043581. The cubic root of 2091773 is about 127.8904702669.

The spelling of 2091773 in words is "two million, ninety-one thousand, seven hundred seventy-three".