655505055 has 20 divisors (see below), whose sum is σ = 1175054232. Its totient is φ = 349602480.

The previous prime is 655505051. The next prime is 655505069. The reversal of 655505055 is 550505556.

655505055 is a `hidden beast` number, since 6 + 5 + 550 + 50 + 55 = 666.

It is not a de Polignac number, because 655505055 - 2² = 655505051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655505051) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 808861 + ... + 809670.

Almost surely, 2^655505055 is an apocalyptic number.

655505055 is a deficient number, since it is larger than the sum of its proper divisors (519549177).

655505055 is a wasteful number, since it uses less digits than its factorization.

655505055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618548 (or 1618539 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 36.

The square root of 655505055 is about 25602.8329487188. The cubic root of 655505055 is about 868.6777178444.

The spelling of 655505055 in words is "six hundred fifty-five million, five hundred five thousand, fifty-five".