232540521 has 8 divisors (see below), whose sum is σ = 315904320. Its totient is φ = 152101872.

The previous prime is 232540507. The next prime is 232540541. The reversal of 232540521 is 125045232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 232540521 - 2⁶ = 232540457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 232540491 and 232540500.

It is not an unprimeable number, because it can be changed into a prime (232540541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 731101 + ... + 731418.

It is an arithmetic number, because the mean of its divisors is an integer number (39488040).

Almost surely, 2^232540521 is an apocalyptic number.

It is an amenable number.

232540521 is a deficient number, since it is larger than the sum of its proper divisors (83363799).

232540521 is a wasteful number, since it uses less digits than its factorization.

232540521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462575.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 232540521 is about 15249.2793600222. The cubic root of 232540521 is about 614.9401938009.

Adding to 232540521 its reverse (125045232), we get a palindrome (357585753).

The spelling of 232540521 in words is "two hundred thirty-two million, five hundred forty thousand, five hundred twenty-one".