521201324 has 48 divisors (see below), whose sum is σ = 1065556800. Its totient is φ = 218453760.

The previous prime is 521201299. The next prime is 521201327. The reversal of 521201324 is 423102125.

It is a junction number, because it is equal to n+sod(n) for n = 521201296 and 521201305.

It is not an unprimeable number, because it can be changed into a prime (521201327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335702 + ... + 337250.

It is an arithmetic number, because the mean of its divisors is an integer number (22199100).

Almost surely, 2^521201324 is an apocalyptic number.

It is an amenable number.

521201324 is an abundant number, since it is smaller than the sum of its proper divisors (544355476).

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

521201324 is a wasteful number, since it uses less digits than its factorization.

521201324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1818 (or 1816 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 521201324 is about 22829.8340773646. The cubic root of 521201324 is about 804.7639311389.

Adding to 521201324 its reverse (423102125), we get a palindrome (944303449).

The spelling of 521201324 in words is "five hundred twenty-one million, two hundred one thousand, three hundred twenty-four".