232664521 has 4 divisors (see below), whose sum is σ = 235467792. Its totient is φ = 229861252.

The previous prime is 232664513. The next prime is 232664587. The reversal of 232664521 is 125466232.

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 232664521 - 2³ = 232664513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (232664501) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1401511 + ... + 1401676.

It is an arithmetic number, because the mean of its divisors is an integer number (58866948).

Almost surely, 2^232664521 is an apocalyptic number.

It is an amenable number.

232664521 is a deficient number, since it is larger than the sum of its proper divisors (2803271).

232664521 is an equidigital number, since it uses as much as digits as its factorization.

232664521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2803270.

The product of its digits is 17280, while the sum is 31.

The square root of 232664521 is about 15253.3445840576. The cubic root of 232664521 is about 615.0494780296.

The spelling of 232664521 in words is "two hundred thirty-two million, six hundred sixty-four thousand, five hundred twenty-one".