520400201 has 2 divisors, whose sum is σ = 520400202. Its totient is φ = 520400200.

The previous prime is 520400173. The next prime is 520400261. The reversal of 520400201 is 102004025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 516380176 + 4020025 = 22724^2 + 2005^2 .

It is a cyclic number.

It is not a de Polignac number, because 520400201 - 2¹⁰ = 520399177 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (520400261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260200100 + 260200101.

It is an arithmetic number, because the mean of its divisors is an integer number (260200101).

Almost surely, 2^520400201 is an apocalyptic number.

It is an amenable number.

520400201 is a deficient number, since it is larger than the sum of its proper divisors (1).

520400201 is an equidigital number, since it uses as much as digits as its factorization.

520400201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 520400201 is about 22812.2818016962. The cubic root of 520400201 is about 804.3513934933.

Adding to 520400201 its reverse (102004025), we get a palindrome (622404226).

The spelling of 520400201 in words is "five hundred twenty million, four hundred thousand, two hundred one".