2051173 has 2 divisors, whose sum is σ = 2051174. Its totient is φ = 2051172.

The previous prime is 2051171. The next prime is 2051191. The reversal of 2051173 is 3711502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2024929 + 26244 = 1423^2 + 162^2 .

It is a cyclic number.

It is not a de Polignac number, because 2051173 - 2¹ = 2051171 is a prime.

Together with 2051171, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2051173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2051171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025586 + 1025587.

It is an arithmetic number, because the mean of its divisors is an integer number (1025587).

2^2051173 is an apocalyptic number.

It is an amenable number.

2051173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051173 is an equidigital number, since it uses as much as digits as its factorization.

2051173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 2051173 is about 1432.1916771159. The cubic root of 2051173 is about 127.0576339565.

Adding to 2051173 its reverse (3711502), we get a palindrome (5762675).

It can be divided in two parts, 205117 and 3, that added together give a triangular number (205120 = T₆₄₀).

The spelling of 2051173 in words is "two million, fifty-one thousand, one hundred seventy-three".