511873 has 2 divisors, whose sum is σ = 511874. Its totient is φ = 511872.

The previous prime is 511867. The next prime is 511891. The reversal of 511873 is 378115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 501264 + 10609 = 708^2 + 103^2 .

It is a cyclic number.

It is not a de Polignac number, because 511873 - 2⁹ = 511361 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (511843) 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, 255936 + 255937.

It is an arithmetic number, because the mean of its divisors is an integer number (255937).

2⁵¹¹⁸⁷³ is an apocalyptic number.

It is an amenable number.

511873 is a deficient number, since it is larger than the sum of its proper divisors (1).

511873 is an equidigital number, since it uses as much as digits as its factorization.

511873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840, while the sum is 25.

The square root of 511873 is about 715.4530033482. The cubic root of 511873 is about 79.9933848697.

Adding to 511873 its reverse (378115), we get a palindrome (889988).

The spelling of 511873 in words is "five hundred eleven thousand, eight hundred seventy-three".