521359044 has 24 divisors (see below), whose sum is σ = 1219226400. Its totient is φ = 173397504.

The previous prime is 521358991. The next prime is 521359049. The reversal of 521359044 is 440953125.

It is a junction number, because it is equal to n+sod(n) for n = 521358996 and 521359014.

It is not an unprimeable number, because it can be changed into a prime (521359049) 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, 42994 + ... + 53769.

It is an arithmetic number, because the mean of its divisors is an integer number (50801100).

Almost surely, 2^521359044 is an apocalyptic number.

It is an amenable number.

521359044 is an abundant number, since it is smaller than the sum of its proper divisors (697867356).

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

521359044 is a wasteful number, since it uses less digits than its factorization.

521359044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97219 (or 97217 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 521359044 is about 22833.2880680817. The cubic root of 521359044 is about 804.8450991127.

The spelling of 521359044 in words is "five hundred twenty-one million, three hundred fifty-nine thousand, forty-four".