655161 has 16 divisors (see below), whose sum is σ = 955584. Its totient is φ = 396864.

The previous prime is 655157. The next prime is 655181. The reversal of 655161 is 161556.

It is not a de Polignac number, because 655161 - 2² = 655157 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 655161.

It is not an unprimeable number, because it can be changed into a prime (655111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4095 + ... + 4251.

It is an arithmetic number, because the mean of its divisors is an integer number (59724).

2⁶⁵⁵¹⁶¹ is an apocalyptic number.

It is an amenable number.

655161 is a deficient number, since it is larger than the sum of its proper divisors (300423).

655161 is a wasteful number, since it uses less digits than its factorization.

655161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280.

The product of its digits is 900, while the sum is 24.

The square root of 655161 is about 809.4201628326. The cubic root of 655161 is about 86.8525710261.

The spelling of 655161 in words is "six hundred fifty-five thousand, one hundred sixty-one".