516943 has 4 divisors (see below), whose sum is σ = 590800. Its totient is φ = 443088.

The previous prime is 516931. The next prime is 516947. The reversal of 516943 is 349615.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 516943 - 2⁵ = 516911 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516947) 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, 36918 + ... + 36931.

It is an arithmetic number, because the mean of its divisors is an integer number (147700).

2⁵¹⁶⁹⁴³ is an apocalyptic number.

516943 is a deficient number, since it is larger than the sum of its proper divisors (73857).

516943 is an equidigital number, since it uses as much as digits as its factorization.

516943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73856.

The product of its digits is 3240, while the sum is 28.

The square root of 516943 is about 718.9874825058. The cubic root of 516943 is about 80.2566238390.

The spelling of 516943 in words is "five hundred sixteen thousand, nine hundred forty-three".