212539513 has 8 divisors (see below), whose sum is σ = 215862248. Its totient is φ = 209240064.

The previous prime is 212539501. The next prime is 212539517. The reversal of 212539513 is 315935212.

212539513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2782224 + 209757289 = 1668^2 + 14483^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212539513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212539517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13045 + ... + 24397.

It is an arithmetic number, because the mean of its divisors is an integer number (26982781).

Almost surely, 2^212539513 is an apocalyptic number.

It is an amenable number.

212539513 is a deficient number, since it is larger than the sum of its proper divisors (3322735).

212539513 is a wasteful number, since it uses less digits than its factorization.

212539513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11643.

The product of its digits is 8100, while the sum is 31.

The square root of 212539513 is about 14578.7349588364. The cubic root of 212539513 is about 596.7785804176.

The spelling of 212539513 in words is "two hundred twelve million, five hundred thirty-nine thousand, five hundred thirteen".