135512647 has 4 divisors (see below), whose sum is σ = 135696760. Its totient is φ = 135328536.

The previous prime is 135512633. The next prime is 135512653. The reversal of 135512647 is 746215531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 746215531 = 11897 ⋅62723.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135512647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135512947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90948 + ... + 92425.

It is an arithmetic number, because the mean of its divisors is an integer number (33924190).

Almost surely, 2^135512647 is an apocalyptic number.

135512647 is a deficient number, since it is larger than the sum of its proper divisors (184113).

135512647 is an equidigital number, since it uses as much as digits as its factorization.

135512647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184112.

The product of its digits is 25200, while the sum is 34.

The square root of 135512647 is about 11640.9899493127. The cubic root of 135512647 is about 513.6413075292.

The spelling of 135512647 in words is "one hundred thirty-five million, five hundred twelve thousand, six hundred forty-seven".