512247 has 4 divisors (see below), whose sum is σ = 683000. Its totient is φ = 341496.

The previous prime is 512207. The next prime is 512249. The reversal of 512247 is 742215.

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

It is not a de Polignac number, because 512247 - 2⁸ = 511991 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85372 + ... + 85377.

It is an arithmetic number, because the mean of its divisors is an integer number (170750).

2⁵¹²²⁴⁷ is an apocalyptic number.

512247 is a deficient number, since it is larger than the sum of its proper divisors (170753).

512247 is a wasteful number, since it uses less digits than its factorization.

512247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170752.

The product of its digits is 560, while the sum is 21.

The square root of 512247 is about 715.7143284859. The cubic root of 512247 is about 80.0128625152.

The spelling of 512247 in words is "five hundred twelve thousand, two hundred forty-seven".