516787 has 4 divisors (see below), whose sum is σ = 539280. Its totient is φ = 494296.

The previous prime is 516757. The next prime is 516793. The reversal of 516787 is 787615.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 787615 = 5 ⋅157523.

It is a cyclic number.

It is not a de Polignac number, because 516787 - 2¹¹ = 514739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11212 + ... + 11257.

It is an arithmetic number, because the mean of its divisors is an integer number (134820).

2⁵¹⁶⁷⁸⁷ is an apocalyptic number.

516787 is a deficient number, since it is larger than the sum of its proper divisors (22493).

516787 is a wasteful number, since it uses less digits than its factorization.

516787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22492.

The product of its digits is 11760, while the sum is 34.

The square root of 516787 is about 718.8789884257. The cubic root of 516787 is about 80.2485499038.

The spelling of 516787 in words is "five hundred sixteen thousand, seven hundred eighty-seven".