212534517 has 24 divisors (see below), whose sum is σ = 311935456. Its totient is φ = 127955808.

The previous prime is 212534507. The next prime is 212534521. The reversal of 212534517 is 715435212.

212534517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212534517 - 2⁷ = 212534389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212534507) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84918 + ... + 87384.

Almost surely, 2^212534517 is an apocalyptic number.

It is an amenable number.

212534517 is a deficient number, since it is larger than the sum of its proper divisors (99400939).

212534517 is a wasteful number, since it uses less digits than its factorization.

212534517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577 (or 2530 counting only the distinct ones).

The product of its digits is 8400, while the sum is 30.

The square root of 212534517 is about 14578.5636123728. The cubic root of 212534517 is about 596.7739043786.

Adding to 212534517 its reverse (715435212), we get a palindrome (927969729).

The spelling of 212534517 in words is "two hundred twelve million, five hundred thirty-four thousand, five hundred seventeen".