2566554 has 16 divisors (see below), whose sum is σ = 5184192. Its totient is φ = 847008.

The previous prime is 2566549. The next prime is 2566561. The reversal of 2566554 is 4556652.

It is a happy number.

2566554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

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, 1459 + ... + 2694.

It is an arithmetic number, because the mean of its divisors is an integer number (324012).

2^2566554 is an apocalyptic number.

2566554 is an abundant number, since it is smaller than the sum of its proper divisors (2617638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2566554 is a wasteful number, since it uses less digits than its factorization.

2566554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4261.

The product of its digits is 36000, while the sum is 33.

The square root of 2566554 is about 1602.0468157953. The cubic root of 2566554 is about 136.9147177330.

The spelling of 2566554 in words is "two million, five hundred sixty-six thousand, five hundred fifty-four".