135261545 has 4 divisors (see below), whose sum is σ = 162313860. Its totient is φ = 108209232.

The previous prime is 135261527. The next prime is 135261547. The reversal of 135261545 is 545162531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545162531 = 2927 ⋅186253.

It can be written as a sum of positive squares in 2 ways, for example, as 56265001 + 78996544 = 7501^2 + 8888^2 .

It is a cyclic number.

It is not a de Polignac number, because 135261545 - 2⁸ = 135261289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135261547) 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, 13526150 + ... + 13526159.

It is an arithmetic number, because the mean of its divisors is an integer number (40578465).

Almost surely, 2^135261545 is an apocalyptic number.

It is an amenable number.

135261545 is a deficient number, since it is larger than the sum of its proper divisors (27052315).

135261545 is an equidigital number, since it uses as much as digits as its factorization.

135261545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27052314.

The product of its digits is 18000, while the sum is 32.

The square root of 135261545 is about 11630.1996973397. The cubic root of 135261545 is about 513.3238559653.

The spelling of 135261545 in words is "one hundred thirty-five million, two hundred sixty-one thousand, five hundred forty-five".