512212243 has 4 divisors (see below), whose sum is σ = 512677728. Its totient is φ = 511746760.

The previous prime is 512212237. The next prime is 512212271. The reversal of 512212243 is 342212215.

It is a happy number.

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 512212243 - 2⁹ = 512211731 is a prime.

It is a super-2 number, since 2×512212243² = 524722763758182098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512212843) 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 in 3 ways as a sum of consecutive naturals, for example, 231088 + ... + 233293.

It is an arithmetic number, because the mean of its divisors is an integer number (128169432).

Almost surely, 2^512212243 is an apocalyptic number.

512212243 is a deficient number, since it is larger than the sum of its proper divisors (465485).

512212243 is a wasteful number, since it uses less digits than its factorization.

512212243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465484.

The product of its digits is 960, while the sum is 22.

The square root of 512212243 is about 22632.1064640479. The cubic root of 512212243 is about 800.1105279579.

Adding to 512212243 its reverse (342212215), we get a palindrome (854424458).

The spelling of 512212243 in words is "five hundred twelve million, two hundred twelve thousand, two hundred forty-three".