134855581 has 8 divisors (see below), whose sum is σ = 154795520. Its totient is φ = 115084368.

The previous prime is 134855573. The next prime is 134855587. The reversal of 134855581 is 185558431.

It is a happy number.

134855581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 134855581 - 2³ = 134855573 is a prime.

It is a super-2 number, since 2×134855581² = 36372055453695122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134855587) 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, 40461 + ... + 43666.

It is an arithmetic number, because the mean of its divisors is an integer number (19349440).

Almost surely, 2^134855581 is an apocalyptic number.

It is an amenable number.

134855581 is a deficient number, since it is larger than the sum of its proper divisors (19939939).

134855581 is an equidigital number, since it uses as much as digits as its factorization.

134855581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84363.

The product of its digits is 96000, while the sum is 40.

The square root of 134855581 is about 11612.7335713862. The cubic root of 134855581 is about 512.8097905737.

The spelling of 134855581 in words is "one hundred thirty-four million, eight hundred fifty-five thousand, five hundred eighty-one".