13531452533 has 2 divisors, whose sum is σ = 13531452534. Its totient is φ = 13531452532.

The previous prime is 13531452503. The next prime is 13531452559. The reversal of 13531452533 is 33525413531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12117166084 + 1414286449 = 110078^2 + 37607^2 .

It is a cyclic number.

It is not a de Polignac number, because 13531452533 - 2⁶ = 13531452469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13531452493 and 13531452502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13531452503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765726266 + 6765726267.

It is an arithmetic number, because the mean of its divisors is an integer number (6765726267).

Almost surely, 2^13531452533 is an apocalyptic number.

It is an amenable number.

13531452533 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531452533 is an equidigital number, since it uses as much as digits as its factorization.

13531452533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81000, while the sum is 35.

The spelling of 13531452533 in words is "thirteen billion, five hundred thirty-one million, four hundred fifty-two thousand, five hundred thirty-three".