2561834 has 8 divisors (see below), whose sum is σ = 4192128. Its totient is φ = 1164460.

The previous prime is 2561833. The next prime is 2561857. The reversal of 2561834 is 4381652.

2561834 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2561797 and 2561806.

It is not an unprimeable number, because it can be changed into a prime (2561833) 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 in 3 ways as a sum of consecutive naturals, for example, 58202 + ... + 58245.

It is an arithmetic number, because the mean of its divisors is an integer number (524016).

2^2561834 is an apocalyptic number.

2561834 is a deficient number, since it is larger than the sum of its proper divisors (1630294).

2561834 is a wasteful number, since it uses less digits than its factorization.

2561834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116460.

The product of its digits is 5760, while the sum is 29.

The square root of 2561834 is about 1600.5730223892. The cubic root of 2561834 is about 136.8307356016.

It can be divided in two parts, 25618 and 34, that added together give a palindrome (25652).

The spelling of 2561834 in words is "two million, five hundred sixty-one thousand, eight hundred thirty-four".