135320055 has 32 divisors (see below), whose sum is σ = 233909760. Its totient is φ = 66407040.

The previous prime is 135320039. The next prime is 135320057. The reversal of 135320055 is 550023531.

It is not a de Polignac number, because 135320055 - 2⁴ = 135320039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135320057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72990 + ... + 74820.

It is an arithmetic number, because the mean of its divisors is an integer number (7309680).

Almost surely, 2^135320055 is an apocalyptic number.

135320055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

135320055 is a deficient number, since it is larger than the sum of its proper divisors (98589705).

135320055 is a wasteful number, since it uses less digits than its factorization.

135320055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 135320055 is about 11632.7148593955. The cubic root of 135320055 is about 513.3978613528.

Adding to 135320055 its reverse (550023531), we get a palindrome (685343586).

The spelling of 135320055 in words is "one hundred thirty-five million, three hundred twenty thousand, fifty-five".