521068478 has 32 divisors (see below), whose sum is σ = 906137280. Its totient is φ = 220112640.

The previous prime is 521068477. The next prime is 521068523. The reversal of 521068478 is 874860125.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521068477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 673700 + ... + 674472.

It is an arithmetic number, because the mean of its divisors is an integer number (28316790).

Almost surely, 2^521068478 is an apocalyptic number.

521068478 is a deficient number, since it is larger than the sum of its proper divisors (385068802).

521068478 is a wasteful number, since it uses less digits than its factorization.

521068478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412.

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 521068478 is about 22826.9244095651. The cubic root of 521068478 is about 804.6955514496.

The spelling of 521068478 in words is "five hundred twenty-one million, sixty-eight thousand, four hundred seventy-eight".