521325230 has 64 divisors (see below), whose sum is σ = 1056706560. Its totient is φ = 184011264.

The previous prime is 521325169. The next prime is 521325283. The reversal of 521325230 is 32523125.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 521325196 and 521325205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 331907 + ... + 333473.

It is an arithmetic number, because the mean of its divisors is an integer number (16511040).

Almost surely, 2^521325230 is an apocalyptic number.

521325230 is an abundant number, since it is smaller than the sum of its proper divisors (535381330).

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

521325230 is a wasteful number, since it uses less digits than its factorization.

521325230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1713.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 521325230 is about 22832.5476020526. The cubic root of 521325230 is about 804.8276986789.

Adding to 521325230 its reverse (32523125), we get a palindrome (553848355).

The spelling of 521325230 in words is "five hundred twenty-one million, three hundred twenty-five thousand, two hundred thirty".