2561954 has 16 divisors (see below), whose sum is σ = 4001400. Its totient is φ = 1229184.

The previous prime is 2561953. The next prime is 2561959. The reversal of 2561954 is 4591652.

It is a happy number.

2561954 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2036329 + 525625 = 1427^2 + 725^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2561954.

It is not an unprimeable number, because it can be changed into a prime (2561953) 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 7 ways as a sum of consecutive naturals, for example, 6392 + ... + 6780.

2^2561954 is an apocalyptic number.

2561954 is a deficient number, since it is larger than the sum of its proper divisors (1439446).

2561954 is a wasteful number, since it uses less digits than its factorization.

2561954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517.

The product of its digits is 10800, while the sum is 32.

The square root of 2561954 is about 1600.6105085248. The cubic root of 2561954 is about 136.8328720179.

The spelling of 2561954 in words is "two million, five hundred sixty-one thousand, nine hundred fifty-four".