2195155 has 8 divisors (see below), whose sum is σ = 2725200. Its totient is φ = 1695456.

The previous prime is 2195147. The next prime is 2195177. The reversal of 2195155 is 5515912.

2195155 = 261² + 262² + ... + 289².

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

It is not a de Polignac number, because 2195155 - 2³ = 2195147 is a prime.

2195155 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7425 + ... + 7714.

It is an arithmetic number, because the mean of its divisors is an integer number (340650).

2^2195155 is an apocalyptic number.

2195155 is a deficient number, since it is larger than the sum of its proper divisors (530045).

2195155 is a wasteful number, since it uses less digits than its factorization.

2195155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15173.

The product of its digits is 2250, while the sum is 28.

The square root of 2195155 is about 1481.6055480458. The cubic root of 2195155 is about 129.9635992760.

The spelling of 2195155 in words is "two million, one hundred ninety-five thousand, one hundred fifty-five".