522761 has 2 divisors, whose sum is σ = 522762. Its totient is φ = 522760.

The previous prime is 522757. The next prime is 522763. The reversal of 522761 is 167225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 490000 + 32761 = 700^2 + 181^2 .

It is a cyclic number.

It is not a de Polignac number, because 522761 - 2² = 522757 is a prime.

It is a Sophie Germain prime.

Together with 522763, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a nialpdrome in base 14.

It is not a weakly prime, because it can be changed into another prime (522763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261380 + 261381.

It is an arithmetic number, because the mean of its divisors is an integer number (261381).

2⁵²²⁷⁶¹ is an apocalyptic number.

It is an amenable number.

522761 is a deficient number, since it is larger than the sum of its proper divisors (1).

522761 is an equidigital number, since it uses as much as digits as its factorization.

522761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840, while the sum is 23.

The square root of 522761 is about 723.0221296752. The cubic root of 522761 is about 80.5565874004.

Adding to 522761 its reverse (167225), we get a palindrome (689986).

The spelling of 522761 in words is "five hundred twenty-two thousand, seven hundred sixty-one".