212523533 has 4 divisors (see below), whose sum is σ = 212697408. Its totient is φ = 212349660.

The previous prime is 212523499. The next prime is 212523551. The reversal of 212523533 is 335325212.

212523533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212523533 - 2⁶ = 212523469 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 (212523583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85091 + ... + 87552.

It is an arithmetic number, because the mean of its divisors is an integer number (53174352).

Almost surely, 2^212523533 is an apocalyptic number.

It is an amenable number.

212523533 is a deficient number, since it is larger than the sum of its proper divisors (173875).

212523533 is a wasteful number, since it uses less digits than its factorization.

212523533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173874.

The product of its digits is 5400, while the sum is 26.

The square root of 212523533 is about 14578.1868900080. The cubic root of 212523533 is about 596.7636235740.

Adding to 212523533 its reverse (335325212), we get a palindrome (547848745).

The spelling of 212523533 in words is "two hundred twelve million, five hundred twenty-three thousand, five hundred thirty-three".