212533513 has 16 divisors (see below), whose sum is σ = 222477840. Its totient is φ = 202853376.

The previous prime is 212533471. The next prime is 212533523. The reversal of 212533513 is 315335212.

It can be written as a sum of positive squares in 8 ways, for example, as 15776784 + 196756729 = 3972^2 + 14027^2 .

It is a cyclic number.

It is not a de Polignac number, because 212533513 - 2⁹ = 212533001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212533523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 767131 + ... + 767407.

It is an arithmetic number, because the mean of its divisors is an integer number (13904865).

Almost surely, 2^212533513 is an apocalyptic number.

It is an amenable number.

212533513 is a deficient number, since it is larger than the sum of its proper divisors (9944327).

212533513 is a wasteful number, since it uses less digits than its factorization.

212533513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636.

The product of its digits is 2700, while the sum is 25.

The square root of 212533513 is about 14578.5291782127. The cubic root of 212533513 is about 596.7729646694.

Adding to 212533513 its reverse (315335212), we get a palindrome (527868725).

The spelling of 212533513 in words is "two hundred twelve million, five hundred thirty-three thousand, five hundred thirteen".