2168255 has 4 divisors (see below), whose sum is σ = 2601912. Its totient is φ = 1734600.

The previous prime is 2168239. The next prime is 2168263. The reversal of 2168255 is 5528612.

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

It is not a de Polignac number, because 2168255 - 2⁴ = 2168239 is a prime.

It is a d-powerful number, because it can be written as 2² + 1 + 6⁶ + 8⁷ + 2¹³ + 5⁴ + 5⁶ .

It is a Duffinian number.

It is a plaindrome in base 13.

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, 216821 + ... + 216830.

It is an arithmetic number, because the mean of its divisors is an integer number (650478).

2^2168255 is an apocalyptic number.

2168255 is a deficient number, since it is larger than the sum of its proper divisors (433657).

2168255 is an equidigital number, since it uses as much as digits as its factorization.

2168255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433656.

The product of its digits is 4800, while the sum is 29.

The square root of 2168255 is about 1472.4995755517. The cubic root of 2168255 is about 129.4305466784.

The spelling of 2168255 in words is "two million, one hundred sixty-eight thousand, two hundred fifty-five".