2564449 has 8 divisors (see below), whose sum is σ = 2738880. Its totient is φ = 2394000.

The previous prime is 2564447. The next prime is 2564459. The reversal of 2564449 is 9444652.

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

It is not a de Polignac number, because 2564449 - 2¹ = 2564447 is a prime.

It is a Duffinian number.

2564449 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2564447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399 + ... + 2299.

It is an arithmetic number, because the mean of its divisors is an integer number (342360).

2^2564449 is an apocalyptic number.

It is an amenable number.

2564449 is a deficient number, since it is larger than the sum of its proper divisors (174431).

2564449 is a wasteful number, since it uses less digits than its factorization.

2564449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991.

The product of its digits is 34560, while the sum is 34.

The square root of 2564449 is about 1601.3897089716. The cubic root of 2564449 is about 136.8772765688.

The spelling of 2564449 in words is "two million, five hundred sixty-four thousand, four hundred forty-nine".