521334442 has 8 divisors (see below), whose sum is σ = 782099136. Its totient is φ = 260634732.

The previous prime is 521334439. The next prime is 521334449. The reversal of 521334442 is 244433125.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 521334442.

It is not an unprimeable number, because it can be changed into a prime (521334449) 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 3 ways as a sum of consecutive naturals, for example, 19873 + ... + 37915.

It is an arithmetic number, because the mean of its divisors is an integer number (97762392).

Almost surely, 2^521334442 is an apocalyptic number.

521334442 is a deficient number, since it is larger than the sum of its proper divisors (260764694).

521334442 is a wasteful number, since it uses less digits than its factorization.

521334442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32492.

The product of its digits is 11520, while the sum is 28.

The square root of 521334442 is about 22832.7493307311. The cubic root of 521334442 is about 804.8324391804.

Adding to 521334442 its reverse (244433125), we get a palindrome (765767567).

The spelling of 521334442 in words is "five hundred twenty-one million, three hundred thirty-four thousand, four hundred forty-two".