135540055 has 32 divisors (see below), whose sum is σ = 197043840. Its totient is φ = 87521280.

The previous prime is 135540037. The next prime is 135540077. The reversal of 135540055 is 550045531.

It is not a de Polignac number, because 135540055 - 2⁵ = 135540023 is a prime.

It is a super-2 number, since 2×135540055² = 36742213018806050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39987 + ... + 43243.

It is an arithmetic number, because the mean of its divisors is an integer number (6157620).

Almost surely, 2^135540055 is an apocalyptic number.

135540055 is a deficient number, since it is larger than the sum of its proper divisors (61503785).

135540055 is a wasteful number, since it uses less digits than its factorization.

135540055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3339.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 135540055 is about 11642.1671092628. The cubic root of 135540055 is about 513.6759338963.

Adding to 135540055 its reverse (550045531), we get a palindrome (685585586).

The spelling of 135540055 in words is "one hundred thirty-five million, five hundred forty thousand, fifty-five".