135543061 has 4 divisors (see below), whose sum is σ = 135580032. Its totient is φ = 135506092.

The previous prime is 135543059. The next prime is 135543097. The reversal of 135543061 is 160345531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 135543061 - 2¹ = 135543059 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 (135543011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12295 + ... + 20548.

It is an arithmetic number, because the mean of its divisors is an integer number (33895008).

Almost surely, 2^135543061 is an apocalyptic number.

It is an amenable number.

135543061 is a deficient number, since it is larger than the sum of its proper divisors (36971).

135543061 is an equidigital number, since it uses as much as digits as its factorization.

135543061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36970.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 135543061 is about 11642.2962082228. The cubic root of 135543061 is about 513.6797312939.

Adding to 135543061 its reverse (160345531), we get a palindrome (295888592).

The spelling of 135543061 in words is "one hundred thirty-five million, five hundred forty-three thousand, sixty-one".