135819755 has 4 divisors (see below), whose sum is σ = 162983712. Its totient is φ = 108655800.

The previous prime is 135819751. The next prime is 135819767. The reversal of 135819755 is 557918531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 557918531 = 2879 ⋅193789.

It is not a de Polignac number, because 135819755 - 2² = 135819751 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135819751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13581971 + ... + 13581980.

It is an arithmetic number, because the mean of its divisors is an integer number (40745928).

Almost surely, 2^135819755 is an apocalyptic number.

135819755 is a deficient number, since it is larger than the sum of its proper divisors (27163957).

135819755 is an equidigital number, since it uses as much as digits as its factorization.

135819755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27163956.

The product of its digits is 189000, while the sum is 44.

The square root of 135819755 is about 11654.1732868531. The cubic root of 135819755 is about 514.0290310986.

The spelling of 135819755 in words is "one hundred thirty-five million, eight hundred nineteen thousand, seven hundred fifty-five".