2255381 has 2 divisors, whose sum is σ = 2255382. Its totient is φ = 2255380.

The previous prime is 2255333. The next prime is 2255387. The reversal of 2255381 is 1835522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2102500 + 152881 = 1450^2 + 391^2 .

It is a cyclic number.

It is not a de Polignac number, because 2255381 - 2¹⁴ = 2238997 is a prime.

It is a super-2 number, since 2×2255381² = 10173486910322, which contains 22 as substring.

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 2255381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2255387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1127690 + 1127691.

It is an arithmetic number, because the mean of its divisors is an integer number (1127691).

2^2255381 is an apocalyptic number.

It is an amenable number.

2255381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2255381 is an equidigital number, since it uses as much as digits as its factorization.

2255381 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 2255381 is about 1501.7925955338. The cubic root of 2255381 is about 131.1414473570.

The spelling of 2255381 in words is "two million, two hundred fifty-five thousand, three hundred eighty-one".