2561146 has 16 divisors (see below), whose sum is σ = 4464000. Its totient is φ = 1079280.

The previous prime is 2561137. The next prime is 2561159. The reversal of 2561146 is 6411652.

2561146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2561146.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 646 + ... + 2353.

It is an arithmetic number, because the mean of its divisors is an integer number (279000).

2^2561146 is an apocalyptic number.

2561146 is a deficient number, since it is larger than the sum of its proper divisors (1902854).

2561146 is a wasteful number, since it uses less digits than its factorization.

2561146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3069.

The product of its digits is 1440, while the sum is 25.

The square root of 2561146 is about 1600.3580849297. The cubic root of 2561146 is about 136.8184855268.

Adding to 2561146 its reverse (6411652), we get a palindrome (8972798).

The spelling of 2561146 in words is "two million, five hundred sixty-one thousand, one hundred forty-six".