2581133 has 2 divisors, whose sum is σ = 2581134. Its totient is φ = 2581132.

The previous prime is 2581123. The next prime is 2581141. The reversal of 2581133 is 3311852.

2581133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1493284 + 1087849 = 1222^2 + 1043^2 .

It is a cyclic number.

It is not a de Polignac number, because 2581133 - 2⁶ = 2581069 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2581099 and 2581108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2581123) 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, 1290566 + 1290567.

It is an arithmetic number, because the mean of its divisors is an integer number (1290567).

2^2581133 is an apocalyptic number.

It is an amenable number.

2581133 is a deficient number, since it is larger than the sum of its proper divisors (1).

2581133 is an equidigital number, since it uses as much as digits as its factorization.

2581133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 23.

The square root of 2581133 is about 1606.5904892038. The cubic root of 2581133 is about 137.1734709166.

Adding to 2581133 its reverse (3311852), we get a palindrome (5892985).

The spelling of 2581133 in words is "two million, five hundred eighty-one thousand, one hundred thirty-three".