134655561 has 16 divisors (see below), whose sum is σ = 199712320. Its totient is φ = 89670240.

The previous prime is 134655553. The next prime is 134655569. The reversal of 134655561 is 165556431.

134655561 is a `hidden beast` number, since 1 + 3 + 46 + 55 + 561 = 666.

It is an interprime number because it is at equal distance from previous prime (134655553) and next prime (134655569).

It is not a de Polignac number, because 134655561 - 2³ = 134655553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134655569) 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 15 ways as a sum of consecutive naturals, for example, 28101 + ... + 32541.

It is an arithmetic number, because the mean of its divisors is an integer number (12482020).

Almost surely, 2^134655561 is an apocalyptic number.

It is an amenable number.

134655561 is a deficient number, since it is larger than the sum of its proper divisors (65056759).

134655561 is a wasteful number, since it uses less digits than its factorization.

134655561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5573 (or 5567 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 134655561 is about 11604.1182775771. The cubic root of 134655561 is about 512.5561291688.

The spelling of 134655561 in words is "one hundred thirty-four million, six hundred fifty-five thousand, five hundred sixty-one".