135445 has 8 divisors (see below), whose sum is σ = 164736. Its totient is φ = 106896.

The previous prime is 135433. The next prime is 135449. The reversal of 135445 is 544531.

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 135445 - 2¹⁵ = 102677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135449) 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, 384 + ... + 646.

It is an arithmetic number, because the mean of its divisors is an integer number (20592).

2¹³⁵⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

135445 is a deficient number, since it is larger than the sum of its proper divisors (29291).

135445 is a wasteful number, since it uses less digits than its factorization.

135445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371.

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

The square root of 135445 is about 368.0285315027. The cubic root of 135445 is about 51.3555824544.

Adding to 135445 its reverse (544531), we get a palindrome (679976).

The spelling of 135445 in words is "one hundred thirty-five thousand, four hundred forty-five".