2564555 has 16 divisors (see below), whose sum is σ = 3594240. Its totient is φ = 1720032.

The previous prime is 2564539. The next prime is 2564561. The reversal of 2564555 is 5554652.

2564555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2564555 - 2⁴ = 2564539 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 866 + ... + 2424.

It is an arithmetic number, because the mean of its divisors is an integer number (224640).

2^2564555 is an apocalyptic number.

2564555 is a deficient number, since it is larger than the sum of its proper divisors (1029685).

2564555 is a wasteful number, since it uses less digits than its factorization.

2564555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618.

The product of its digits is 30000, while the sum is 32.

The square root of 2564555 is about 1601.4228048832. The cubic root of 2564555 is about 136.8791624569.

The spelling of 2564555 in words is "two million, five hundred sixty-four thousand, five hundred fifty-five".