135755591 has 8 divisors (see below), whose sum is σ = 149991264. Its totient is φ = 122214400.

The previous prime is 135755579. The next prime is 135755597. The reversal of 135755591 is 195557531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135755591 - 2¹⁴ = 135739207 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 (135755597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173210 + ... + 173991.

It is an arithmetic number, because the mean of its divisors is an integer number (18748908).

Almost surely, 2^135755591 is an apocalyptic number.

135755591 is a deficient number, since it is larger than the sum of its proper divisors (14235673).

135755591 is a wasteful number, since it uses less digits than its factorization.

135755591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347241.

The product of its digits is 118125, while the sum is 41.

The square root of 135755591 is about 11651.4201280359. The cubic root of 135755591 is about 513.9480724439.

The spelling of 135755591 in words is "one hundred thirty-five million, seven hundred fifty-five thousand, five hundred ninety-one".