135540505 has 4 divisors (see below), whose sum is σ = 162648612. Its totient is φ = 108432400.

The previous prime is 135540499. The next prime is 135540511. The reversal of 135540505 is 505045531.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (135540499) and next prime (135540511).

It can be written as a sum of positive squares in 2 ways, for example, as 64256256 + 71284249 = 8016^2 + 8443^2 .

It is not a de Polignac number, because 135540505 - 2³ = 135540497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13554046 + ... + 13554055.

It is an arithmetic number, because the mean of its divisors is an integer number (40662153).

Almost surely, 2^135540505 is an apocalyptic number.

It is an amenable number.

135540505 is a deficient number, since it is larger than the sum of its proper divisors (27108107).

135540505 is an equidigital number, since it uses as much as digits as its factorization.

135540505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27108106.

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

The square root of 135540505 is about 11642.1864355455. The cubic root of 135540505 is about 513.6765023725.

The spelling of 135540505 in words is "one hundred thirty-five million, five hundred forty thousand, five hundred five".