135541081 has 8 divisors (see below), whose sum is σ = 146059200. Its totient is φ = 125036112.

The previous prime is 135541069. The next prime is 135541097. The reversal of 135541081 is 180145531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135541081 - 2¹⁵ = 135508313 is a prime.

It is a super-2 number, since 2×135541081² = 36742769277297122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135541381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33156 + ... + 37018.

It is an arithmetic number, because the mean of its divisors is an integer number (18257400).

Almost surely, 2^135541081 is an apocalyptic number.

It is an amenable number.

135541081 is a deficient number, since it is larger than the sum of its proper divisors (10518119).

135541081 is a wasteful number, since it uses less digits than its factorization.

135541081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6575.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 135541081 is about 11642.2111731406. The cubic root of 135541081 is about 513.6772300203.

It can be divided in two parts, 1355 and 41081, that added together give a square (42436 = 206²).

The spelling of 135541081 in words is "one hundred thirty-five million, five hundred forty-one thousand, eighty-one".