1530173 has 2 divisors, whose sum is σ = 1530174. Its totient is φ = 1530172.

The previous prime is 1530157. The next prime is 1530197. The reversal of 1530173 is 3710351.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1530169 + 4 = 1237^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 1530173 - 2⁴ = 1530157 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1530103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 765086 + 765087.

It is an arithmetic number, because the mean of its divisors is an integer number (765087).

2^1530173 is an apocalyptic number.

It is an amenable number.

1530173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1530173 is an equidigital number, since it uses as much as digits as its factorization.

1530173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 315, while the sum is 20.

The square root of 1530173 is about 1237.0016168138. The cubic root of 1530173 is about 115.2338781614.

The spelling of 1530173 in words is "one million, five hundred thirty thousand, one hundred seventy-three".