520330001 has 4 divisors (see below), whose sum is σ = 534393012. Its totient is φ = 506266992.

The previous prime is 520329949. The next prime is 520330037. The reversal of 520330001 is 100033025.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 331240000 + 189090001 = 18200^2 + 13751^2 .

It is a cyclic number.

It is not a de Polignac number, because 520330001 - 2⁶ = 520329937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (520330501) 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, 7031450 + ... + 7031523.

It is an arithmetic number, because the mean of its divisors is an integer number (133598253).

Almost surely, 2^520330001 is an apocalyptic number.

It is an amenable number.

520330001 is a deficient number, since it is larger than the sum of its proper divisors (14063011).

520330001 is a wasteful number, since it uses less digits than its factorization.

520330001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14063010.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 520330001 is about 22810.7431049495. The cubic root of 520330001 is about 804.3152238897.

Adding to 520330001 its reverse (100033025), we get a palindrome (620363026).

The spelling of 520330001 in words is "five hundred twenty million, three hundred thirty thousand, one".