135771449 has 8 divisors (see below), whose sum is σ = 150625440. Its totient is φ = 121336000.

The previous prime is 135771439. The next prime is 135771451. The reversal of 135771449 is 944177531.

135771449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 135771449 - 2⁸ = 135771193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135771409) 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, 103952 + ... + 105249.

It is an arithmetic number, because the mean of its divisors is an integer number (18828180).

Almost surely, 2^135771449 is an apocalyptic number.

It is an amenable number.

135771449 is a deficient number, since it is larger than the sum of its proper divisors (14853991).

135771449 is a wasteful number, since it uses less digits than its factorization.

135771449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209271.

The product of its digits is 105840, while the sum is 41.

The square root of 135771449 is about 11652.1006260674. The cubic root of 135771449 is about 513.9680835810.

The spelling of 135771449 in words is "one hundred thirty-five million, seven hundred seventy-one thousand, four hundred forty-nine".