2812155 has 8 divisors (see below), whose sum is σ = 4499472. Its totient is φ = 1499808.

The previous prime is 2812153. The next prime is 2812169. The reversal of 2812155 is 5512182.

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

It is not a de Polignac number, because 2812155 - 2¹ = 2812153 is a prime.

2812155 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2812153) 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, 93724 + ... + 93753.

It is an arithmetic number, because the mean of its divisors is an integer number (562434).

2^2812155 is an apocalyptic number.

2812155 is a deficient number, since it is larger than the sum of its proper divisors (1687317).

2812155 is a wasteful number, since it uses less digits than its factorization.

2812155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187485.

The product of its digits is 800, while the sum is 24.

The square root of 2812155 is about 1676.9481208433. The cubic root of 2812155 is about 141.1496324085.

The spelling of 2812155 in words is "two million, eight hundred twelve thousand, one hundred fifty-five".