521334241 has 4 divisors (see below), whose sum is σ = 522126000. Its totient is φ = 520542484.

The previous prime is 521334197. The next prime is 521334251. The reversal of 521334241 is 142433125.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 521334241 - 2⁷ = 521334113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521334251) 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, 394891 + ... + 396208.

It is an arithmetic number, because the mean of its divisors is an integer number (130531500).

Almost surely, 2^521334241 is an apocalyptic number.

It is an amenable number.

521334241 is a deficient number, since it is larger than the sum of its proper divisors (791759).

521334241 is an equidigital number, since it uses as much as digits as its factorization.

521334241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791758.

The product of its digits is 2880, while the sum is 25.

The square root of 521334241 is about 22832.7449291582. The cubic root of 521334241 is about 804.8323357463.

Adding to 521334241 its reverse (142433125), we get a palindrome (663767366).

The spelling of 521334241 in words is "five hundred twenty-one million, three hundred thirty-four thousand, two hundred forty-one".