521063331 has 8 divisors (see below), whose sum is σ = 696081600. Its totient is φ = 346710312.

The previous prime is 521063327. The next prime is 521063351. The reversal of 521063331 is 133360125.

It is a happy number.

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

It is not a de Polignac number, because 521063331 - 2² = 521063327 is a prime.

It is a super-2 number, since 2×521063331² = 543013989825631122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (521063351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164481 + ... + 167618.

It is an arithmetic number, because the mean of its divisors is an integer number (87010200).

Almost surely, 2^521063331 is an apocalyptic number.

521063331 is a deficient number, since it is larger than the sum of its proper divisors (175018269).

521063331 is a wasteful number, since it uses less digits than its factorization.

521063331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332625.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 521063331 is about 22826.8116696134. The cubic root of 521063331 is about 804.6929019056.

The spelling of 521063331 in words is "five hundred twenty-one million, sixty-three thousand, three hundred thirty-one".