521422241 has 8 divisors (see below), whose sum is σ = 535810944. Its totient is φ = 507049200.

The previous prime is 521422219. The next prime is 521422243. The reversal of 521422241 is 142224125.

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 521422241 - 2¹⁰ = 521421217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521422243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103016 + ... + 107958.

It is an arithmetic number, because the mean of its divisors is an integer number (66976368).

Almost surely, 2^521422241 is an apocalyptic number.

It is an amenable number.

521422241 is a deficient number, since it is larger than the sum of its proper divisors (14388703).

521422241 is a wasteful number, since it uses less digits than its factorization.

521422241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7831.

The product of its digits is 1280, while the sum is 23.

The square root of 521422241 is about 22834.6719048030. The cubic root of 521422241 is about 804.8776178035.

Adding to 521422241 its reverse (142224125), we get a palindrome (663646366).

The spelling of 521422241 in words is "five hundred twenty-one million, four hundred twenty-two thousand, two hundred forty-one".