521063323 has 8 divisors (see below), whose sum is σ = 572523840. Its totient is φ = 470284680.

The previous prime is 521063303. The next prime is 521063327. The reversal of 521063323 is 323360125.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 521063323 - 2²⁵ = 487508891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521063327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168865 + ... + 171922.

It is an arithmetic number, because the mean of its divisors is an integer number (71565480).

Almost surely, 2^521063323 is an apocalyptic number.

521063323 is a deficient number, since it is larger than the sum of its proper divisors (51460517).

521063323 is a wasteful number, since it uses less digits than its factorization.

521063323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340937.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 521063323 is about 22826.8114943809. The cubic root of 521063323 is about 804.6928977874.

The spelling of 521063323 in words is "five hundred twenty-one million, sixty-three thousand, three hundred twenty-three".