2855217 has 8 divisors (see below), whose sum is σ = 3835296. Its totient is φ = 1889312.

The previous prime is 2855213. The next prime is 2855221. The reversal of 2855217 is 7125582.

It is an interprime number because it is at equal distance from previous prime (2855213) and next prime (2855221).

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 2855217 - 2² = 2855213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2855213) 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, 3063 + ... + 3884.

It is an arithmetic number, because the mean of its divisors is an integer number (479412).

2^2855217 is an apocalyptic number.

It is an amenable number.

2855217 is a deficient number, since it is larger than the sum of its proper divisors (980079).

2855217 is a wasteful number, since it uses less digits than its factorization.

2855217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7087.

The product of its digits is 5600, while the sum is 30.

The square root of 2855217 is about 1689.7387372017. The cubic root of 2855217 is about 141.8664518387.

The spelling of 2855217 in words is "two million, eight hundred fifty-five thousand, two hundred seventeen".