522135252 has 36 divisors (see below), whose sum is σ = 1326698100. Its totient is φ = 173140992.

The previous prime is 522135241. The next prime is 522135293. The reversal of 522135252 is 252531225.

522135252 is a `hidden beast` number, since 522 + 135 + 2 + 5 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 50637456 + 471497796 = 7116^2 + 21714^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×522135252² = 545250442762207008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 30627 + ... + 44522.

It is an arithmetic number, because the mean of its divisors is an integer number (36852725).

Almost surely, 2^522135252 is an apocalyptic number.

It is an amenable number.

522135252 is an abundant number, since it is smaller than the sum of its proper divisors (804562848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

522135252 is a wasteful number, since it uses less digits than its factorization.

522135252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75352 (or 75347 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 522135252 is about 22850.2790354954. The cubic root of 522135252 is about 805.2443233027.

Adding to 522135252 its reverse (252531225), we get a palindrome (774666477).

The spelling of 522135252 in words is "five hundred twenty-two million, one hundred thirty-five thousand, two hundred fifty-two".