135211755 has 16 divisors (see below), whose sum is σ = 247244544. Its totient is φ = 61811040.

The previous prime is 135211753. The next prime is 135211759. The reversal of 135211755 is 557112531.

135211755 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 135211755 - 2¹ = 135211753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135211753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 643761 + ... + 643970.

It is an arithmetic number, because the mean of its divisors is an integer number (15452784).

Almost surely, 2^135211755 is an apocalyptic number.

135211755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

135211755 is a deficient number, since it is larger than the sum of its proper divisors (112032789).

135211755 is a wasteful number, since it uses less digits than its factorization.

135211755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287746.

The product of its digits is 5250, while the sum is 30.

The square root of 135211755 is about 11628.0589523789. The cubic root of 135211755 is about 513.2608631133.

The spelling of 135211755 in words is "one hundred thirty-five million, two hundred eleven thousand, seven hundred fifty-five".