2654561 has 16 divisors (see below), whose sum is σ = 3376128. Its totient is φ = 2030400.

The previous prime is 2654557. The next prime is 2654581. The reversal of 2654561 is 1654562.

It is a cyclic number.

It is not a de Polignac number, because 2654561 - 2² = 2654557 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2654501) 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 15 ways as a sum of consecutive naturals, for example, 2351 + ... + 3291.

It is an arithmetic number, because the mean of its divisors is an integer number (211008).

2^2654561 is an apocalyptic number.

2654561 is the 941-st octagonal number.

It is an amenable number.

2654561 is a deficient number, since it is larger than the sum of its proper divisors (721567).

2654561 is a wasteful number, since it uses less digits than its factorization.

2654561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992.

The product of its digits is 7200, while the sum is 29.

The square root of 2654561 is about 1629.2823573586. The cubic root of 2654561 is about 138.4620965236.

Subtracting from 2654561 its reverse (1654562), we obtain a palindrome (999999).

The spelling of 2654561 in words is "two million, six hundred fifty-four thousand, five hundred sixty-one".