523350113521 has 2 divisors, whose sum is σ = 523350113522. Its totient is φ = 523350113520.

The previous prime is 523350113519. The next prime is 523350113543. The reversal of 523350113521 is 125311053325.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 433142994496 + 90207119025 = 658136^2 + 300345^2 .

It is a cyclic number.

It is not a de Polignac number, because 523350113521 - 2¹ = 523350113519 is a prime.

Together with 523350113519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (523350113591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261675056760 + 261675056761.

It is an arithmetic number, because the mean of its divisors is an integer number (261675056761).

Almost surely, 2^523350113521 is an apocalyptic number.

It is an amenable number.

523350113521 is a deficient number, since it is larger than the sum of its proper divisors (1).

523350113521 is an equidigital number, since it uses as much as digits as its factorization.

523350113521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13500, while the sum is 31.

Adding to 523350113521 its reverse (125311053325), we get a palindrome (648661166846).

The spelling of 523350113521 in words is "five hundred twenty-three billion, three hundred fifty million, one hundred thirteen thousand, five hundred twenty-one".