135544 has 8 divisors (see below), whose sum is σ = 254160. Its totient is φ = 67768.

The previous prime is 135533. The next prime is 135559. The reversal of 135544 is 445531.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8464 + ... + 8479.

It is an arithmetic number, because the mean of its divisors is an integer number (31770).

2¹³⁵⁵⁴⁴ is an apocalyptic number.

It is an amenable number.

135544 is a deficient number, since it is larger than the sum of its proper divisors (118616).

135544 is a wasteful number, since it uses less digits than its factorization.

135544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16949 (or 16945 counting only the distinct ones).

The product of its digits is 1200, while the sum is 22.

The square root of 135544 is about 368.1630073758. The cubic root of 135544 is about 51.3680917495.

The spelling of 135544 in words is "one hundred thirty-five thousand, five hundred forty-four".