520242061 has 2 divisors, whose sum is σ = 520242062. Its totient is φ = 520242060.

The previous prime is 520242029. The next prime is 520242101. The reversal of 520242061 is 160242025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 386122500 + 134119561 = 19650^2 + 11581^2 .

It is a cyclic number.

It is not a de Polignac number, because 520242061 - 2⁵ = 520242029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520242161) 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, 260121030 + 260121031.

It is an arithmetic number, because the mean of its divisors is an integer number (260121031).

Almost surely, 2^520242061 is an apocalyptic number.

It is an amenable number.

520242061 is a deficient number, since it is larger than the sum of its proper divisors (1).

520242061 is an equidigital number, since it uses as much as digits as its factorization.

520242061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 520242061 is about 22808.8154229894. The cubic root of 520242061 is about 804.2699093997.

Adding to 520242061 its reverse (160242025), we get a palindrome (680484086).

The spelling of 520242061 in words is "five hundred twenty million, two hundred forty-two thousand, sixty-one".