2559181 has 2 divisors, whose sum is σ = 2559182. Its totient is φ = 2559180.

The previous prime is 2559173. The next prime is 2559191. The reversal of 2559181 is 1819552.

2559181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1368900 + 1190281 = 1170^2 + 1091^2 .

It is a cyclic number.

It is not a de Polignac number, because 2559181 - 2³ = 2559173 is a prime.

It is a super-2 number, since 2×2559181² = 13098814781522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2559101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1279590 + 1279591.

It is an arithmetic number, because the mean of its divisors is an integer number (1279591).

2^2559181 is an apocalyptic number.

It is an amenable number.

2559181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2559181 is an equidigital number, since it uses as much as digits as its factorization.

2559181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 31.

The square root of 2559181 is about 1599.7440420267. The cubic root of 2559181 is about 136.7834859459.

The spelling of 2559181 in words is "two million, five hundred fifty-nine thousand, one hundred eighty-one".