2855231 has 2 divisors, whose sum is σ = 2855232. Its totient is φ = 2855230.

The previous prime is 2855221. The next prime is 2855233. The reversal of 2855231 is 1325582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2855231 - 2¹⁰ = 2854207 is a prime.

It is a super-2 number, since 2×2855231² = 16304688126722, which contains 22 as substring.

Together with 2855233, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2855231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2855233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1427615 + 1427616.

It is an arithmetic number, because the mean of its divisors is an integer number (1427616).

2^2855231 is an apocalyptic number.

2855231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2855231 is an equidigital number, since it uses as much as digits as its factorization.

2855231 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2855231 is about 1689.7428798489. The cubic root of 2855231 is about 141.8666837098.

The spelling of 2855231 in words is "two million, eight hundred fifty-five thousand, two hundred thirty-one".