232521066 has 24 divisors (see below), whose sum is σ = 504566244. Its totient is φ = 77388480.

The previous prime is 232521041. The next prime is 232521071. The reversal of 232521066 is 660125232.

It can be written as a sum of positive squares in 2 ways, for example, as 225630441 + 6890625 = 15021^2 + 2625^2 .

It is a super-2 number, since 2×232521066² = 108132092267552712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2646 + ... + 21726.

Almost surely, 2^232521066 is an apocalyptic number.

232521066 is an abundant number, since it is smaller than the sum of its proper divisors (272045178).

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

232521066 is a wasteful number, since it uses less digits than its factorization.

232521066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19766 (or 19763 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 232521066 is about 15248.6414476831. The cubic root of 232521066 is about 614.9230441086.

Adding to 232521066 its reverse (660125232), we get a palindrome (892646298).

The spelling of 232521066 in words is "two hundred thirty-two million, five hundred twenty-one thousand, sixty-six".