516811 has 2 divisors, whose sum is σ = 516812. Its totient is φ = 516810.

The previous prime is 516793. The next prime is 516821. The reversal of 516811 is 118615.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 516811 - 2¹³ = 508619 is a prime.

It is not a weakly prime, because it can be changed into another prime (516821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258405 + 258406.

It is an arithmetic number, because the mean of its divisors is an integer number (258406).

2⁵¹⁶⁸¹¹ is an apocalyptic number.

516811 is the 322-nd centered decagonal number.

516811 is a deficient number, since it is larger than the sum of its proper divisors (1).

516811 is an equidigital number, since it uses as much as digits as its factorization.

516811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 22.

The square root of 516811 is about 718.8956808884. The cubic root of 516811 is about 80.2497921534.

It can be divided in two parts, 51 and 6811, that multiplied together give a triangular number (347361 = T₈₃₃).

The spelling of 516811 in words is "five hundred sixteen thousand, eight hundred eleven".