521131053404 has 12 divisors (see below), whose sum is σ = 982131600744. Its totient is φ = 240522024624.

The previous prime is 521131053307. The next prime is 521131053413. The reversal of 521131053404 is 404350131125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5010875462 + ... + 5010875565.

It is an arithmetic number, because the mean of its divisors is an integer number (81844300062).

Almost surely, 2^521131053404 is an apocalyptic number.

It is an amenable number.

521131053404 is a deficient number, since it is larger than the sum of its proper divisors (461000547340).

521131053404 is a wasteful number, since it uses less digits than its factorization.

521131053404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10021751044 (or 10021751042 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 521131053404 its reverse (404350131125), we get a palindrome (925481184529).

The spelling of 521131053404 in words is "five hundred twenty-one billion, one hundred thirty-one million, fifty-three thousand, four hundred four".