2555281 has 2 divisors, whose sum is σ = 2555282. Its totient is φ = 2555280.

The previous prime is 2555263. The next prime is 2555303. The reversal of 2555281 is 1825552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2509056 + 46225 = 1584^2 + 215^2 .

It is a cyclic number.

It is not a de Polignac number, because 2555281 - 2¹¹ = 2553233 is a prime.

It is a super-2 number, since 2×2555281² = 13058921977922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2555221) 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, 1277640 + 1277641.

It is an arithmetic number, because the mean of its divisors is an integer number (1277641).

2^2555281 is an apocalyptic number.

It is an amenable number.

2555281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2555281 is an equidigital number, since it uses as much as digits as its factorization.

2555281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4000, while the sum is 28.

The square root of 2555281 is about 1598.5246322782. The cubic root of 2555281 is about 136.7139680276.

The spelling of 2555281 in words is "two million, five hundred fifty-five thousand, two hundred eighty-one".