134771561 has 8 divisors (see below), whose sum is σ = 136870848. Its totient is φ = 132678000.

The previous prime is 134771557. The next prime is 134771569. The reversal of 134771561 is 165177431.

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 134771561 - 2² = 134771557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (134771569) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 82331 + ... + 83951.

It is an arithmetic number, because the mean of its divisors is an integer number (17108856).

Almost surely, 2^134771561 is an apocalyptic number.

It is an amenable number.

134771561 is a deficient number, since it is larger than the sum of its proper divisors (2099287).

134771561 is a wasteful number, since it uses less digits than its factorization.

134771561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2863.

The product of its digits is 17640, while the sum is 35.

The square root of 134771561 is about 11609.1154271116. The cubic root of 134771561 is about 512.7032686448.

The spelling of 134771561 in words is "one hundred thirty-four million, seven hundred seventy-one thousand, five hundred sixty-one".