2581049 has 2 divisors, whose sum is σ = 2581050. Its totient is φ = 2581048.

The previous prime is 2581031. The next prime is 2581069. The reversal of 2581049 is 9401852.

2581049 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., 1841449 + 739600 = 1357^2 + 860^2 .

It is a cyclic number.

It is not a de Polignac number, because 2581049 - 2¹² = 2576953 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2581069) 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, 1290524 + 1290525.

It is an arithmetic number, because the mean of its divisors is an integer number (1290525).

2^2581049 is an apocalyptic number.

It is an amenable number.

2581049 is a deficient number, since it is larger than the sum of its proper divisors (1).

2581049 is an equidigital number, since it uses as much as digits as its factorization.

2581049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 2581049 is about 1606.5643466727. The cubic root of 2581049 is about 137.1719828496.

The spelling of 2581049 in words is "two million, five hundred eighty-one thousand, forty-nine".