135512885 has 4 divisors (see below), whose sum is σ = 162615468. Its totient is φ = 108410304.

The previous prime is 135512857. The next prime is 135512917. The reversal of 135512885 is 588215531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 588215531 = 73 ⋅8057747.

It can be written as a sum of positive squares in 2 ways, for example, as 48762289 + 86750596 = 6983^2 + 9314^2 .

It is a cyclic number.

It is not a de Polignac number, because 135512885 - 2¹⁰ = 135511861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13551284 + ... + 13551293.

It is an arithmetic number, because the mean of its divisors is an integer number (40653867).

Almost surely, 2^135512885 is an apocalyptic number.

It is an amenable number.

135512885 is a deficient number, since it is larger than the sum of its proper divisors (27102583).

135512885 is an equidigital number, since it uses as much as digits as its factorization.

135512885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27102582.

The product of its digits is 48000, while the sum is 38.

The square root of 135512885 is about 11641.0001718065. Note that the first 3 decimals coincide. The cubic root of 135512885 is about 513.6416082307.

The spelling of 135512885 in words is "one hundred thirty-five million, five hundred twelve thousand, eight hundred eighty-five".