2561133 has 8 divisors (see below), whose sum is σ = 3423808. Its totient is φ = 1702944.

The previous prime is 2561129. The next prime is 2561137. The reversal of 2561133 is 3311652.

2561133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2561129) and next prime (2561137).

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

It is not a de Polignac number, because 2561133 - 2² = 2561129 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561137) 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, 585 + ... + 2337.

It is an arithmetic number, because the mean of its divisors is an integer number (427976).

2^2561133 is an apocalyptic number.

It is an amenable number.

2561133 is a deficient number, since it is larger than the sum of its proper divisors (862675).

2561133 is a wasteful number, since it uses less digits than its factorization.

2561133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2243.

The product of its digits is 540, while the sum is 21.

The square root of 2561133 is about 1600.3540233336. The cubic root of 2561133 is about 136.8182540362.

Adding to 2561133 its reverse (3311652), we get a palindrome (5872785).

The spelling of 2561133 in words is "two million, five hundred sixty-one thousand, one hundred thirty-three".