516575989 has 2 divisors, whose sum is σ = 516575990. Its totient is φ = 516575988.

The previous prime is 516575987. The next prime is 516575993. The reversal of 516575989 is 989575615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 507826225 + 8749764 = 22535^2 + 2958^2 .

It is a cyclic number.

It is not a de Polignac number, because 516575989 - 2¹ = 516575987 is a prime.

It is a super-2 number, since 2×516575989² = 533701504822656242, which contains 22 as substring.

Together with 516575987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516575987) 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, 258287994 + 258287995.

It is an arithmetic number, because the mean of its divisors is an integer number (258287995).

Almost surely, 2^516575989 is an apocalyptic number.

It is an amenable number.

516575989 is a deficient number, since it is larger than the sum of its proper divisors (1).

516575989 is an equidigital number, since it uses as much as digits as its factorization.

516575989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3402000, while the sum is 55.

The square root of 516575989 is about 22728.3080980525. The cubic root of 516575989 is about 802.3762623373.

The spelling of 516575989 in words is "five hundred sixteen million, five hundred seventy-five thousand, nine hundred eighty-nine".