521331104 has 24 divisors (see below), whose sum is σ = 1172995488. Its totient is φ = 223427520.

The previous prime is 521331103. The next prime is 521331121. The reversal of 521331104 is 401133125.

It is a super-2 number, since 2×521331104² = 543572239995717632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (521331103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1163462 + ... + 1163909.

It is an arithmetic number, because the mean of its divisors is an integer number (48874812).

Almost surely, 2^521331104 is an apocalyptic number.

It is an amenable number.

521331104 is an abundant number, since it is smaller than the sum of its proper divisors (651664384).

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

521331104 is a wasteful number, since it uses less digits than its factorization.

521331104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2327388 (or 2327380 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 521331104 is about 22832.6762338540. The cubic root of 521331104 is about 804.8307214498.

Adding to 521331104 its reverse (401133125), we get a palindrome (922464229).

The spelling of 521331104 in words is "five hundred twenty-one million, three hundred thirty-one thousand, one hundred four".