135082561 has 8 divisors (see below), whose sum is σ = 143631360. Its totient is φ = 126600768.

The previous prime is 135082547. The next prime is 135082567. The reversal of 135082561 is 165280531.

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

It is not a de Polignac number, because 135082561 - 2⁷ = 135082433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135082567) 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, 12561 + ... + 20686.

It is an arithmetic number, because the mean of its divisors is an integer number (17953920).

Almost surely, 2^135082561 is an apocalyptic number.

It is an amenable number.

135082561 is a deficient number, since it is larger than the sum of its proper divisors (8548799).

135082561 is a wasteful number, since it uses less digits than its factorization.

135082561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33503.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 135082561 is about 11622.5023553450. The cubic root of 135082561 is about 513.0973384877.

The spelling of 135082561 in words is "one hundred thirty-five million, eighty-two thousand, five hundred sixty-one".