520344401 has 4 divisors (see below), whose sum is σ = 520407552. Its totient is φ = 520281252.

The previous prime is 520344373. The next prime is 520344413. The reversal of 520344401 is 104443025.

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 520344401 - 2⁶ = 520344337 is a prime.

It is a super-3 number, since 3×520344401³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520344901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16961 + ... + 36446.

It is an arithmetic number, because the mean of its divisors is an integer number (130101888).

Almost surely, 2^520344401 is an apocalyptic number.

It is an amenable number.

520344401 is a deficient number, since it is larger than the sum of its proper divisors (63151).

520344401 is an equidigital number, since it uses as much as digits as its factorization.

520344401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63150.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 520344401 is about 22811.0587435130. The cubic root of 520344401 is about 804.3226435608.

Adding to 520344401 its reverse (104443025), we get a palindrome (624787426).

The spelling of 520344401 in words is "five hundred twenty million, three hundred forty-four thousand, four hundred one".