512747987 has 2 divisors, whose sum is σ = 512747988. Its totient is φ = 512747986.

The previous prime is 512747969. The next prime is 512748001. The reversal of 512747987 is 789747215.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 512747987 - 2⁸ = 512747731 is a prime.

It is not a weakly prime, because it can be changed into another prime (512717987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256373993 + 256373994.

It is an arithmetic number, because the mean of its divisors is an integer number (256373994).

Almost surely, 2^512747987 is an apocalyptic number.

512747987 is a deficient number, since it is larger than the sum of its proper divisors (1).

512747987 is an equidigital number, since it uses as much as digits as its factorization.

512747987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 987840, while the sum is 50.

The square root of 512747987 is about 22643.9392995124. The cubic root of 512747987 is about 800.3893870040.

The spelling of 512747987 in words is "five hundred twelve million, seven hundred forty-seven thousand, nine hundred eighty-seven".