520231601 has 2 divisors, whose sum is σ = 520231602. Its totient is φ = 520231600.

The previous prime is 520231583. The next prime is 520231643. The reversal of 520231601 is 106132025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 468679201 + 51552400 = 21649^2 + 7180^2 .

It is a cyclic number.

It is not a de Polignac number, because 520231601 - 2¹⁰ = 520230577 is a prime.

It is not a weakly prime, because it can be changed into another prime (520234601) 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 as a sum of consecutive naturals, namely, 260115800 + 260115801.

It is an arithmetic number, because the mean of its divisors is an integer number (260115801).

Almost surely, 2^520231601 is an apocalyptic number.

It is an amenable number.

520231601 is a deficient number, since it is larger than the sum of its proper divisors (1).

520231601 is an equidigital number, since it uses as much as digits as its factorization.

520231601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 520231601 is about 22808.5861245278. The cubic root of 520231601 is about 804.2645191399.

Adding to 520231601 its reverse (106132025), we get a palindrome (626363626).

The spelling of 520231601 in words is "five hundred twenty million, two hundred thirty-one thousand, six hundred one".