135782775 has 54 divisors (see below), whose sum is σ = 249972840. Its totient is φ = 70454400.

The previous prime is 135782753. The next prime is 135782783. The reversal of 135782775 is 577287531.

135782775 is a `hidden beast` number, since 1 + 3 + 578 + 2 + 7 + 75 = 666.

It is not a de Polignac number, because 135782775 - 2²⁰ = 134734199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 135782775.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 378046 + ... + 378404.

Almost surely, 2^135782775 is an apocalyptic number.

135782775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

135782775 is a deficient number, since it is larger than the sum of its proper divisors (114190065).

135782775 is a wasteful number, since it uses less digits than its factorization.

135782775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 408 counting only the distinct ones).

The product of its digits is 411600, while the sum is 45.

The square root of 135782775 is about 11652.5866227203. The cubic root of 135782775 is about 513.9823748543.

The spelling of 135782775 in words is "one hundred thirty-five million, seven hundred eighty-two thousand, seven hundred seventy-five".