2155008 has 80 divisors (see below), whose sum is σ = 6088896. Its totient is φ = 675840.

The previous prime is 2155007. The next prime is 2155009. The reversal of 2155008 is 8005512.

It is an interprime number because it is at equal distance from previous prime (2155007) and next prime (2155009).

It is not an unprimeable number, because it can be changed into a prime (2155003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35298 + ... + 35358.

2^2155008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2155008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3044448).

2155008 is an abundant number, since it is smaller than the sum of its proper divisors (3933888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2155008 is an equidigital number, since it uses as much as digits as its factorization.

2155008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 2155008 is about 1467.9945503986. The cubic root of 2155008 is about 129.1664218286.

The spelling of 2155008 in words is "two million, one hundred fifty-five thousand, eight".