135537539 has 2 divisors, whose sum is σ = 135537540. Its totient is φ = 135537538.

The previous prime is 135537529. The next prime is 135537541. The reversal of 135537539 is 935735531.

It is a strong prime.

It is an emirp because it is prime and its reverse (935735531) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135537539 is a prime.

Together with 135537541, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 135537496 and 135537505.

It is not a weakly prime, because it can be changed into another prime (135537529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67768769 + 67768770.

It is an arithmetic number, because the mean of its divisors is an integer number (67768770).

Almost surely, 2^135537539 is an apocalyptic number.

135537539 is a deficient number, since it is larger than the sum of its proper divisors (1).

135537539 is an equidigital number, since it uses as much as digits as its factorization.

135537539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 212625, while the sum is 41.

The square root of 135537539 is about 11642.0590532775. The cubic root of 135537539 is about 513.6727554591.

The spelling of 135537539 in words is "one hundred thirty-five million, five hundred thirty-seven thousand, five hundred thirty-nine".