521322422 has 8 divisors (see below), whose sum is σ = 791882400. Its totient is φ = 257361624.

The previous prime is 521322353. The next prime is 521322481. The reversal of 521322422 is 224223125.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1649597 + ... + 1649912.

It is an arithmetic number, because the mean of its divisors is an integer number (98985300).

Almost surely, 2^521322422 is an apocalyptic number.

521322422 is a deficient number, since it is larger than the sum of its proper divisors (270559978).

521322422 is a wasteful number, since it uses less digits than its factorization.

521322422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3299590.

The product of its digits is 1920, while the sum is 23.

The square root of 521322422 is about 22832.4861108027. The cubic root of 521322422 is about 804.8262536691.

Adding to 521322422 its reverse (224223125), we get a palindrome (745545547).

The spelling of 521322422 in words is "five hundred twenty-one million, three hundred twenty-two thousand, four hundred twenty-two".