522523513546381 has 2 divisors, whose sum is σ = 522523513546382. Its totient is φ = 522523513546380.

The previous prime is 522523513546379. The next prime is 522523513546393. The reversal of 522523513546381 is 183645315325225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 304489761633225 + 218033751913156 = 17449635^2 + 14765966^2 .

It is a cyclic number.

It is not a de Polignac number, because 522523513546381 - 2¹ = 522523513546379 is a prime.

It is a super-2 number, since 2×522523513546381² (a number of 30 digits) contains 22 as substring.

Together with 522523513546379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (522523513549381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261261756773190 + 261261756773191.

It is an arithmetic number, because the mean of its divisors is an integer number (261261756773191).

Almost surely, 2^{522523513546381} is an apocalyptic number.

It is an amenable number.

522523513546381 is a deficient number, since it is larger than the sum of its proper divisors (1).

522523513546381 is an equidigital number, since it uses as much as digits as its factorization.

522523513546381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920000, while the sum is 55.

The spelling of 522523513546381 in words is "five hundred twenty-two trillion, five hundred twenty-three billion, five hundred thirteen million, five hundred forty-six thousand, three hundred eighty-one".