2753561 has 4 divisors (see below), whose sum is σ = 2757300. Its totient is φ = 2749824.

The previous prime is 2753551. The next prime is 2753567. The reversal of 2753561 is 1653572.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1907161 + 846400 = 1381^2 + 920^2 .

It is a cyclic number.

It is not a de Polignac number, because 2753561 - 2⁶ = 2753497 is a prime.

It is a super-3 number, since 3×2753561³ = 62633309545812892443, which contains 333 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2753567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356 + ... + 2373.

It is an arithmetic number, because the mean of its divisors is an integer number (689325).

2^2753561 is an apocalyptic number.

It is an amenable number.

2753561 is a deficient number, since it is larger than the sum of its proper divisors (3739).

2753561 is a wasteful number, since it uses less digits than its factorization.

2753561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3738.

The product of its digits is 6300, while the sum is 29.

The square root of 2753561 is about 1659.3857297205. The cubic root of 2753561 is about 140.1624135525.

The spelling of 2753561 in words is "two million, seven hundred fifty-three thousand, five hundred sixty-one".