655155 has 32 divisors (see below), whose sum is σ = 1221120. Its totient is φ = 332640.

The previous prime is 655121. The next prime is 655157. The reversal of 655155 is 551556.

655155 is a `hidden beast` number, since 655 + 1 + 5 + 5 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-655155 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (655157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3000 + ... + 3210.

It is an arithmetic number, because the mean of its divisors is an integer number (38160).

2⁶⁵⁵¹⁵⁵ is an apocalyptic number.

655155 is a deficient number, since it is larger than the sum of its proper divisors (565965).

655155 is a wasteful number, since it uses less digits than its factorization.

655155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 242 counting only the distinct ones).

The product of its digits is 3750, while the sum is 27.

The square root of 655155 is about 809.4164564673. The cubic root of 655155 is about 86.8523058918.

The spelling of 655155 in words is "six hundred fifty-five thousand, one hundred fifty-five".