512122889 has 2 divisors, whose sum is σ = 512122890. Its totient is φ = 512122888.

The previous prime is 512122879. The next prime is 512122931. The reversal of 512122889 is 988221215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 507015289 + 5107600 = 22517^2 + 2260^2 .

It is a cyclic number.

It is not a de Polignac number, because 512122889 - 2¹² = 512118793 is a prime.

It is not a weakly prime, because it can be changed into another prime (512122829) 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 as a sum of consecutive naturals, namely, 256061444 + 256061445.

It is an arithmetic number, because the mean of its divisors is an integer number (256061445).

Almost surely, 2^512122889 is an apocalyptic number.

It is an amenable number.

512122889 is a deficient number, since it is larger than the sum of its proper divisors (1).

512122889 is an equidigital number, since it uses as much as digits as its factorization.

512122889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 38.

The square root of 512122889 is about 22630.1323239613. The cubic root of 512122889 is about 800.0639995674.

The spelling of 512122889 in words is "five hundred twelve million, one hundred twenty-two thousand, eight hundred eighty-nine".