511673 has 4 divisors (see below), whose sum is σ = 525540. Its totient is φ = 497808.

The previous prime is 511669. The next prime is 511691. The reversal of 511673 is 376115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 376115 = 5 ⋅75223.

It can be written as a sum of positive squares in 2 ways, for example, as 273529 + 238144 = 523^2 + 488^2 .

It is a cyclic number.

It is not a de Polignac number, because 511673 - 2² = 511669 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511603) 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 in 3 ways as a sum of consecutive naturals, for example, 6878 + ... + 6951.

It is an arithmetic number, because the mean of its divisors is an integer number (131385).

2⁵¹¹⁶⁷³ is an apocalyptic number.

It is an amenable number.

511673 is a deficient number, since it is larger than the sum of its proper divisors (13867).

511673 is a wasteful number, since it uses less digits than its factorization.

511673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13866.

The product of its digits is 630, while the sum is 23.

The square root of 511673 is about 715.3132181080. The cubic root of 511673 is about 79.9829651229.

Adding to 511673 its reverse (376115), we get a palindrome (887788).

The spelling of 511673 in words is "five hundred eleven thousand, six hundred seventy-three".