135855249 has 8 divisors (see below), whose sum is σ = 182899392. Its totient is φ = 89690640.

The previous prime is 135855241. The next prime is 135855257. The reversal of 135855249 is 942558531.

It is an interprime number because it is at equal distance from previous prime (135855241) and next prime (135855257).

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

It is not a de Polignac number, because 135855249 - 2³ = 135855241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135855249.

It is not an unprimeable number, because it can be changed into a prime (135855241) 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, 219522 + ... + 220139.

It is an arithmetic number, because the mean of its divisors is an integer number (22862424).

Almost surely, 2^135855249 is an apocalyptic number.

It is an amenable number.

135855249 is a deficient number, since it is larger than the sum of its proper divisors (47044143).

135855249 is a wasteful number, since it uses less digits than its factorization.

135855249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439767.

The product of its digits is 216000, while the sum is 42.

The square root of 135855249 is about 11655.6959895152. The cubic root of 135855249 is about 514.0738045493.

The spelling of 135855249 in words is "one hundred thirty-five million, eight hundred fifty-five thousand, two hundred forty-nine".