516205373 has 2 divisors, whose sum is σ = 516205374. Its totient is φ = 516205372.

The previous prime is 516205309. The next prime is 516205379. The reversal of 516205373 is 373502615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 502970329 + 13235044 = 22427^2 + 3638^2 .

It is a cyclic number.

It is not a de Polignac number, because 516205373 - 2⁶ = 516205309 is a prime.

It is a super-2 number, since 2×516205373² = 532935974228138258, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516205379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258102686 + 258102687.

It is an arithmetic number, because the mean of its divisors is an integer number (258102687).

Almost surely, 2^516205373 is an apocalyptic number.

It is an amenable number.

516205373 is a deficient number, since it is larger than the sum of its proper divisors (1).

516205373 is an equidigital number, since it uses as much as digits as its factorization.

516205373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 516205373 is about 22720.1534545874. The cubic root of 516205373 is about 802.1843288934.

Adding to 516205373 its reverse (373502615), we get a palindrome (889707988).

The spelling of 516205373 in words is "five hundred sixteen million, two hundred five thousand, three hundred seventy-three".