512987 has 4 divisors (see below), whose sum is σ = 522720. Its totient is φ = 503256.

The previous prime is 512977. The next prime is 512989. The reversal of 512987 is 789215.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 512987 - 2¹⁰ = 511963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4787 + ... + 4892.

It is an arithmetic number, because the mean of its divisors is an integer number (130680).

2⁵¹²⁹⁸⁷ is an apocalyptic number.

512987 is a deficient number, since it is larger than the sum of its proper divisors (9733).

512987 is an equidigital number, since it uses as much as digits as its factorization.

512987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9732.

The product of its digits is 5040, while the sum is 32.

The square root of 512987 is about 716.2311079533. The cubic root of 512987 is about 80.0513732528.

The spelling of 512987 in words is "five hundred twelve thousand, nine hundred eighty-seven".