13522544521 has 2 divisors, whose sum is σ = 13522544522. Its totient is φ = 13522544520.

The previous prime is 13522544513. The next prime is 13522544557. The reversal of 13522544521 is 12544522531.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6865779600 + 6656764921 = 82860^2 + 81589^2 .

It is a cyclic number.

It is not a de Polignac number, because 13522544521 - 2³ = 13522544513 is a prime.

It is not a weakly prime, because it can be changed into another prime (13522544591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6761272260 + 6761272261.

It is an arithmetic number, because the mean of its divisors is an integer number (6761272261).

Almost surely, 2^13522544521 is an apocalyptic number.

It is an amenable number.

13522544521 is a deficient number, since it is larger than the sum of its proper divisors (1).

13522544521 is an equidigital number, since it uses as much as digits as its factorization.

13522544521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48000, while the sum is 34.

The spelling of 13522544521 in words is "thirteen billion, five hundred twenty-two million, five hundred forty-four thousand, five hundred twenty-one".