2561883 has 16 divisors (see below), whose sum is σ = 3649536. Its totient is φ = 1592960.

The previous prime is 2561873. The next prime is 2561899. The reversal of 2561883 is 3881652.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2561883 - 2⁸ = 2561627 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹⁶ + 5⁸ + 6⁵ + 1 + 8² + 8⁷ + 3⁶ .

It is not an unprimeable number, because it can be changed into a prime (2561813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9610 + ... + 9872.

It is an arithmetic number, because the mean of its divisors is an integer number (228096).

2^2561883 is an apocalyptic number.

2561883 is a deficient number, since it is larger than the sum of its proper divisors (1087653).

2561883 is a wasteful number, since it uses less digits than its factorization.

2561883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474.

The product of its digits is 11520, while the sum is 33.

The square root of 2561883 is about 1600.5883293339. The cubic root of 2561883 is about 136.8316079797.

The spelling of 2561883 in words is "two million, five hundred sixty-one thousand, eight hundred eighty-three".