521434888 has 16 divisors (see below), whose sum is σ = 1052897580. Its totient is φ = 240662208.

The previous prime is 521434867. The next prime is 521434913. The reversal of 521434888 is 888434125.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 503643364 + 17791524 = 22442^2 + 4218^2 .

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, 2506795 + ... + 2507002.

Almost surely, 2^521434888 is an apocalyptic number.

It is an amenable number.

521434888 is an abundant number, since it is smaller than the sum of its proper divisors (531462692).

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

521434888 is a wasteful number, since it uses less digits than its factorization.

521434888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5013816 (or 5013812 counting only the distinct ones).

The product of its digits is 245760, while the sum is 43.

The square root of 521434888 is about 22834.9488284953. The cubic root of 521434888 is about 804.8841251368.

The spelling of 521434888 in words is "five hundred twenty-one million, four hundred thirty-four thousand, eight hundred eighty-eight".