521938241 has 32 divisors (see below), whose sum is σ = 618541056. Its totient is φ = 435600000.

The previous prime is 521938163. The next prime is 521938273. The reversal of 521938241 is 142839125.

It is not a de Polignac number, because 521938241 - 2¹⁰ = 521937217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521938741) 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 31 ways as a sum of consecutive naturals, for example, 694616 + ... + 695366.

It is an arithmetic number, because the mean of its divisors is an integer number (19329408).

Almost surely, 2^521938241 is an apocalyptic number.

It is an amenable number.

521938241 is a deficient number, since it is larger than the sum of its proper divisors (96602815).

521938241 is a wasteful number, since it uses less digits than its factorization.

521938241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893.

The product of its digits is 17280, while the sum is 35.

The square root of 521938241 is about 22845.9677186150. The cubic root of 521938241 is about 805.1430328511.

The spelling of 521938241 in words is "five hundred twenty-one million, nine hundred thirty-eight thousand, two hundred forty-one".