512341987 has 2 divisors, whose sum is σ = 512341988. Its totient is φ = 512341986.

The previous prime is 512341981. The next prime is 512342009. The reversal of 512341987 is 789143215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 512341987 - 2¹¹ = 512339939 is a prime.

It is not a weakly prime, because it can be changed into another prime (512341981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256170993 + 256170994.

It is an arithmetic number, because the mean of its divisors is an integer number (256170994).

Almost surely, 2^512341987 is an apocalyptic number.

512341987 is a deficient number, since it is larger than the sum of its proper divisors (1).

512341987 is an equidigital number, since it uses as much as digits as its factorization.

512341987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 512341987 is about 22634.9726529545. The cubic root of 512341987 is about 800.1780785862.

The spelling of 512341987 in words is "five hundred twelve million, three hundred forty-one thousand, nine hundred eighty-seven".