3218255 has 4 divisors (see below), whose sum is σ = 3861912. Its totient is φ = 2574600.

The previous prime is 3218233. The next prime is 3218261. The reversal of 3218255 is 5528123.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3218255 - 2⁶ = 3218191 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321821 + ... + 321830.

It is an arithmetic number, because the mean of its divisors is an integer number (965478).

Almost surely, 2^3218255 is an apocalyptic number.

3218255 is a deficient number, since it is larger than the sum of its proper divisors (643657).

3218255 is an equidigital number, since it uses as much as digits as its factorization.

3218255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643656.

The product of its digits is 2400, while the sum is 26.

The square root of 3218255 is about 1793.9495533598. The cubic root of 3218255 is about 147.6409454244.

The spelling of 3218255 in words is "three million, two hundred eighteen thousand, two hundred fifty-five".