135554 has 4 divisors (see below), whose sum is σ = 203334. Its totient is φ = 67776.

The previous prime is 135533. The next prime is 135559. The reversal of 135554 is 455531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 105625 + 29929 = 325^2 + 173^2 .

It is a Curzon number.

It is a nialpdrome in base 12.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 135554.

It is not an unprimeable number, because it can be changed into a prime (135559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33887 + ... + 33890.

2¹³⁵⁵⁵⁴ is an apocalyptic number.

135554 is a deficient number, since it is larger than the sum of its proper divisors (67780).

135554 is an equidigital number, since it uses as much as digits as its factorization.

135554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67779.

The product of its digits is 1500, while the sum is 23.

The square root of 135554 is about 368.1765880661. The cubic root of 135554 is about 51.3693549760.

Subtracting from 135554 its sum of digits (23), we obtain a palindrome (135531).

The spelling of 135554 in words is "one hundred thirty-five thousand, five hundred fifty-four".