520243801 has 8 divisors (see below), whose sum is σ = 648615744. Its totient is φ = 405384720.

The previous prime is 520243783. The next prime is 520243817. The reversal of 520243801 is 108342025.

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 520243801 - 2⁹ = 520243289 is a prime.

It is a super-2 number, since 2×520243801² = 541307224957855202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (520243201) 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, 3378130 + ... + 3378283.

It is an arithmetic number, because the mean of its divisors is an integer number (81076968).

Almost surely, 2^520243801 is an apocalyptic number.

It is an amenable number.

520243801 is a deficient number, since it is larger than the sum of its proper divisors (128371943).

520243801 is a wasteful number, since it uses less digits than its factorization.

520243801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6756431.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 520243801 is about 22808.8535661045. The cubic root of 520243801 is about 804.2708060516.

Adding to 520243801 its reverse (108342025), we get a palindrome (628585826).

The spelling of 520243801 in words is "five hundred twenty million, two hundred forty-three thousand, eight hundred one".