2155795 has 8 divisors (see below), whose sum is σ = 2596320. Its totient is φ = 1718400.

The previous prime is 2155793. The next prime is 2155799. The reversal of 2155795 is 5975512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2155795 - 2¹ = 2155793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2155795.

It is not an unprimeable number, because it can be changed into a prime (2155793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1195 + ... + 2395.

It is an arithmetic number, because the mean of its divisors is an integer number (324540).

2^2155795 is an apocalyptic number.

2155795 is a deficient number, since it is larger than the sum of its proper divisors (440525).

2155795 is a wasteful number, since it uses less digits than its factorization.

2155795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565.

The product of its digits is 15750, while the sum is 34.

The square root of 2155795 is about 1468.2625786963. The cubic root of 2155795 is about 129.1821435958.

The spelling of 2155795 in words is "two million, one hundred fifty-five thousand, seven hundred ninety-five".