522140257 has 2 divisors, whose sum is σ = 522140258. Its totient is φ = 522140256.

The previous prime is 522140251. The next prime is 522140279. The reversal of 522140257 is 752041225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 274266721 + 247873536 = 16561^2 + 15744^2 .

It is a cyclic number.

It is not a de Polignac number, because 522140257 - 2²³ = 513751649 is a prime.

It is not a weakly prime, because it can be changed into another prime (522140251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261070128 + 261070129.

It is an arithmetic number, because the mean of its divisors is an integer number (261070129).

Almost surely, 2^522140257 is an apocalyptic number.

It is an amenable number.

522140257 is a deficient number, since it is larger than the sum of its proper divisors (1).

522140257 is an equidigital number, since it uses as much as digits as its factorization.

522140257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 522140257 is about 22850.3885524951. The cubic root of 522140257 is about 805.2468962216.

The spelling of 522140257 in words is "five hundred twenty-two million, one hundred forty thousand, two hundred fifty-seven".