520400241 has 8 divisors (see below), whose sum is σ = 770963360. Its totient is φ = 346933476.

The previous prime is 520400201. The next prime is 520400261. The reversal of 520400241 is 142004025.

520400241 is a `hidden beast` number, since 5 + 20 + 400 + 241 = 666.

It is not a de Polignac number, because 520400241 - 2⁷ = 520400113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520400201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9637015 + ... + 9637068.

It is an arithmetic number, because the mean of its divisors is an integer number (96370420).

Almost surely, 2^520400241 is an apocalyptic number.

It is an amenable number.

520400241 is a deficient number, since it is larger than the sum of its proper divisors (250563119).

520400241 is a wasteful number, since it uses less digits than its factorization.

520400241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19274092 (or 19274086 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 520400241 is about 22812.2826784169. The cubic root of 520400241 is about 804.3514141019.

Adding to 520400241 its reverse (142004025), we get a palindrome (662404266).

The spelling of 520400241 in words is "five hundred twenty million, four hundred thousand, two hundred forty-one".