2561833 has 2 divisors, whose sum is σ = 2561834. Its totient is φ = 2561832.

The previous prime is 2561821. The next prime is 2561857. The reversal of 2561833 is 3381652.

2561833 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., 2518569 + 43264 = 1587^2 + 208^2 .

It is a cyclic number.

It is not a de Polignac number, because 2561833 - 2¹⁷ = 2430761 is a prime.

It is not a weakly prime, because it can be changed into another prime (2561813) 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, 1280916 + 1280917.

It is an arithmetic number, because the mean of its divisors is an integer number (1280917).

2^2561833 is an apocalyptic number.

It is an amenable number.

2561833 is a deficient number, since it is larger than the sum of its proper divisors (1).

2561833 is an equidigital number, since it uses as much as digits as its factorization.

2561833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 28.

The square root of 2561833 is about 1600.5727100010. The cubic root of 2561833 is about 136.8307177979.

It can be divided in two parts, 25618 and 33, that added together give a triangular number (25651 = T₂₂₆).

The spelling of 2561833 in words is "two million, five hundred sixty-one thousand, eight hundred thirty-three".