2106155 has 8 divisors (see below), whose sum is σ = 2544432. Its totient is φ = 1673568.

The previous prime is 2106149. The next prime is 2106173. The reversal of 2106155 is 5516012.

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

It is a cyclic number.

It is not a de Polignac number, because 2106155 - 2²⁰ = 1057579 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 557 + ... + 2126.

It is an arithmetic number, because the mean of its divisors is an integer number (318054).

2^2106155 is an apocalyptic number.

2106155 is a deficient number, since it is larger than the sum of its proper divisors (438277).

2106155 is a wasteful number, since it uses less digits than its factorization.

2106155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2845.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 2106155 is about 1451.2597975552. The cubic root of 2106155 is about 128.1829050181.

The spelling of 2106155 in words is "two million, one hundred six thousand, one hundred fifty-five".