135543145 has 4 divisors (see below), whose sum is σ = 162651780. Its totient is φ = 108434512.

The previous prime is 135543113. The next prime is 135543151. The reversal of 135543145 is 541345531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541345531 = 5683 ⋅95257.

It can be written as a sum of positive squares in 2 ways, for example, as 17081689 + 118461456 = 4133^2 + 10884^2 .

It is a cyclic number.

It is not a de Polignac number, because 135543145 - 2⁵ = 135543113 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13554310 + ... + 13554319.

It is an arithmetic number, because the mean of its divisors is an integer number (40662945).

Almost surely, 2^135543145 is an apocalyptic number.

It is an amenable number.

135543145 is a deficient number, since it is larger than the sum of its proper divisors (27108635).

135543145 is an equidigital number, since it uses as much as digits as its factorization.

135543145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27108634.

The product of its digits is 18000, while the sum is 31.

The square root of 135543145 is about 11642.2998157581. The cubic root of 135543145 is about 513.6798374080.

Adding to 135543145 its reverse (541345531), we get a palindrome (676888676).

The spelling of 135543145 in words is "one hundred thirty-five million, five hundred forty-three thousand, one hundred forty-five".