135565438 has 4 divisors (see below), whose sum is σ = 203348160. Its totient is φ = 67782718.

The previous prime is 135565433. The next prime is 135565439. The reversal of 135565438 is 834565531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 834565531 = 947 ⋅881273.

It is a self number, because there is not a number n which added to its sum of digits gives 135565438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135565433) 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 as a sum of consecutive naturals, namely, 33891358 + ... + 33891361.

It is an arithmetic number, because the mean of its divisors is an integer number (50837040).

Almost surely, 2^135565438 is an apocalyptic number.

135565438 is a deficient number, since it is larger than the sum of its proper divisors (67782722).

135565438 is an equidigital number, since it uses as much as digits as its factorization.

135565438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67782721.

The product of its digits is 216000, while the sum is 40.

The square root of 135565438 is about 11643.2571903226. The cubic root of 135565438 is about 513.7079977817.

The spelling of 135565438 in words is "one hundred thirty-five million, five hundred sixty-five thousand, four hundred thirty-eight".