135085759 has 4 divisors (see below), whose sum is σ = 136117080. Its totient is φ = 134054440.

The previous prime is 135085733. The next prime is 135085793. The reversal of 135085759 is 957580531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135085759 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 (135085729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515464 + ... + 515725.

It is an arithmetic number, because the mean of its divisors is an integer number (34029270).

Almost surely, 2^135085759 is an apocalyptic number.

135085759 is a deficient number, since it is larger than the sum of its proper divisors (1031321).

135085759 is a wasteful number, since it uses less digits than its factorization.

135085759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031320.

The product of its (nonzero) digits is 189000, while the sum is 43.

The square root of 135085759 is about 11622.6399324766. The cubic root of 135085759 is about 513.1013875481.

The spelling of 135085759 in words is "one hundred thirty-five million, eighty-five thousand, seven hundred fifty-nine".