135561155 has 16 divisors (see below), whose sum is σ = 170965344. Its totient is φ = 103057920.

The previous prime is 135561131. The next prime is 135561191. The reversal of 135561155 is 551165531.

135561155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 135561155 - 2⁶ = 135561091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 566 + ... + 16475.

It is an arithmetic number, because the mean of its divisors is an integer number (10685334).

Almost surely, 2^135561155 is an apocalyptic number.

135561155 is a deficient number, since it is larger than the sum of its proper divisors (35404189).

135561155 is a wasteful number, since it uses less digits than its factorization.

135561155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17126.

The product of its digits is 11250, while the sum is 32.

The square root of 135561155 is about 11643.0732626742. The cubic root of 135561155 is about 513.7025877634.

The spelling of 135561155 in words is "one hundred thirty-five million, five hundred sixty-one thousand, one hundred fifty-five".