135372155 has 4 divisors (see below), whose sum is σ = 162446592. Its totient is φ = 108297720.

The previous prime is 135372121. The next prime is 135372157. The reversal of 135372155 is 551273531.

135372155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551273531 = 61 ⋅9037271.

It is not a de Polignac number, because 135372155 - 2⁶ = 135372091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135372157) 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, 13537211 + ... + 13537220.

It is an arithmetic number, because the mean of its divisors is an integer number (40611648).

Almost surely, 2^135372155 is an apocalyptic number.

135372155 is a deficient number, since it is larger than the sum of its proper divisors (27074437).

135372155 is an equidigital number, since it uses as much as digits as its factorization.

135372155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27074436.

The product of its digits is 15750, while the sum is 32.

The square root of 135372155 is about 11634.9540179581. The cubic root of 135372155 is about 513.4637412071.

The spelling of 135372155 in words is "one hundred thirty-five million, three hundred seventy-two thousand, one hundred fifty-five".