521044396 has 12 divisors (see below), whose sum is σ = 912296952. Its totient is φ = 260388128.

The previous prime is 521044367. The next prime is 521044423. The reversal of 521044396 is 693440125.

It is a happy 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, 24505 + ... + 40528.

It is an arithmetic number, because the mean of its divisors is an integer number (76024746).

Almost surely, 2^521044396 is an apocalyptic number.

It is an amenable number.

521044396 is a deficient number, since it is larger than the sum of its proper divisors (391252556).

521044396 is a wasteful number, since it uses less digits than its factorization.

521044396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67040 (or 67038 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 521044396 is about 22826.3969123469. The cubic root of 521044396 is about 804.6831545014.

The spelling of 521044396 in words is "five hundred twenty-one million, forty-four thousand, three hundred ninety-six".