512132861 has 2 divisors, whose sum is σ = 512132862. Its totient is φ = 512132860.

The previous prime is 512132857. The next prime is 512132867. The reversal of 512132861 is 168231215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 480705625 + 31427236 = 21925^2 + 5606^2 .

It is a cyclic number.

It is not a de Polignac number, because 512132861 - 2² = 512132857 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (512132867) 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, 256066430 + 256066431.

It is an arithmetic number, because the mean of its divisors is an integer number (256066431).

Almost surely, 2^512132861 is an apocalyptic number.

It is an amenable number.

512132861 is a deficient number, since it is larger than the sum of its proper divisors (1).

512132861 is an equidigital number, since it uses as much as digits as its factorization.

512132861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 29.

The square root of 512132861 is about 22630.3526486001. The cubic root of 512132861 is about 800.0691924528.

The spelling of 512132861 in words is "five hundred twelve million, one hundred thirty-two thousand, eight hundred sixty-one".