135519547 has 2 divisors, whose sum is σ = 135519548. Its totient is φ = 135519546.

The previous prime is 135519539. The next prime is 135519577. The reversal of 135519547 is 745915531.

It is a weak prime.

It is an emirp because it is prime and its reverse (745915531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135519547 - 2³ = 135519539 is a prime.

It is not a weakly prime, because it can be changed into another prime (135519577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67759773 + 67759774.

It is an arithmetic number, because the mean of its divisors is an integer number (67759774).

Almost surely, 2^135519547 is an apocalyptic number.

135519547 is a deficient number, since it is larger than the sum of its proper divisors (1).

135519547 is an equidigital number, since it uses as much as digits as its factorization.

135519547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94500, while the sum is 40.

The square root of 135519547 is about 11641.2863120877. The cubic root of 135519547 is about 513.6500252023.

It can be divided in two parts, 1355 and 19547, that added together give a palindrome (20902).

The spelling of 135519547 in words is "one hundred thirty-five million, five hundred nineteen thousand, five hundred forty-seven".