2155168 has 12 divisors (see below), whose sum is σ = 4243050. Its totient is φ = 1077568.

The previous prime is 2155163. The next prime is 2155171. The reversal of 2155168 is 8615512.

It can be written as a sum of positive squares in only one way, i.e., 2155024 + 144 = 1468^2 + 12^2 .

It is not an unprimeable number, because it can be changed into a prime (2155163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33643 + ... + 33706.

2^2155168 is an apocalyptic number.

It is an amenable number.

2155168 is a deficient number, since it is larger than the sum of its proper divisors (2087882).

2155168 is an equidigital number, since it uses as much as digits as its factorization.

2155168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67359 (or 67351 counting only the distinct ones).

The product of its digits is 2400, while the sum is 28.

The square root of 2155168 is about 1468.0490455022. The cubic root of 2155168 is about 129.1696184318.

The spelling of 2155168 in words is "two million, one hundred fifty-five thousand, one hundred sixty-eight".