522840161 has 2 divisors, whose sum is σ = 522840162. Its totient is φ = 522840160.

The previous prime is 522840127. The next prime is 522840179. The reversal of 522840161 is 161048225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 413512225 + 109327936 = 20335^2 + 10456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-522840161 is a prime.

It is not a weakly prime, because it can be changed into another prime (522840181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261420080 + 261420081.

It is an arithmetic number, because the mean of its divisors is an integer number (261420081).

Almost surely, 2^522840161 is an apocalyptic number.

It is an amenable number.

522840161 is a deficient number, since it is larger than the sum of its proper divisors (1).

522840161 is an equidigital number, since it uses as much as digits as its factorization.

522840161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 522840161 is about 22865.6983492742. The cubic root of 522840161 is about 805.6065338727.

Adding to 522840161 its reverse (161048225), we get a palindrome (683888386).

The spelling of 522840161 in words is "five hundred twenty-two million, eight hundred forty thousand, one hundred sixty-one".