516997 has 4 divisors (see below), whose sum is σ = 556780. Its totient is φ = 477216.

The previous prime is 516991. The next prime is 517003. The reversal of 516997 is 799615.

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

It is an interprime number because it is at equal distance from previous prime (516991) and next prime (517003).

It can be written as a sum of positive squares in 2 ways, for example, as 73441 + 443556 = 271^2 + 666^2 .

It is a cyclic number.

It is not a de Polignac number, because 516997 - 2¹¹ = 514949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516991) 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 in 3 ways as a sum of consecutive naturals, for example, 19872 + ... + 19897.

It is an arithmetic number, because the mean of its divisors is an integer number (139195).

2⁵¹⁶⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

516997 is a deficient number, since it is larger than the sum of its proper divisors (39783).

516997 is a wasteful number, since it uses less digits than its factorization.

516997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39782.

The product of its digits is 17010, while the sum is 37.

The square root of 516997 is about 719.0250343347. The cubic root of 516997 is about 80.2594182843.

The spelling of 516997 in words is "five hundred sixteen thousand, nine hundred ninety-seven".