135057 has 8 divisors (see below), whose sum is σ = 193984. Its totient is φ = 83088.

The previous prime is 135049. The next prime is 135059. The reversal of 135057 is 750531.

It is a happy number.

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

It is not a de Polignac number, because 135057 - 2³ = 135049 is a prime.

It is the 368-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135059) by changing a digit.

It is a nontrivial repunit in base 367.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1693 + ... + 1770.

It is an arithmetic number, because the mean of its divisors is an integer number (24248).

2¹³⁵⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

135057 is a deficient number, since it is larger than the sum of its proper divisors (58927).

135057 is a wasteful number, since it uses less digits than its factorization.

135057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3479.

The product of its (nonzero) digits is 525, while the sum is 21.

The square root of 135057 is about 367.5010204067. The cubic root of 135057 is about 51.3064972828.

Adding to 135057 its reverse (750531), we get a palindrome (885588).

The spelling of 135057 in words is "one hundred thirty-five thousand, fifty-seven".