2566449 has 6 divisors (see below), whose sum is σ = 3707106. Its totient is φ = 1710960.

The previous prime is 2566433. The next prime is 2566469. The reversal of 2566449 is 9446652.

2566449 is a `hidden beast` number, since 2 + 5 + 6 + 644 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2030625 + 535824 = 1425^2 + 732^2 .

It is not a de Polignac number, because 2566449 - 2⁴ = 2566433 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566469) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142572 + ... + 142589.

It is an arithmetic number, because the mean of its divisors is an integer number (617851).

2^2566449 is an apocalyptic number.

It is an amenable number.

2566449 is a deficient number, since it is larger than the sum of its proper divisors (1140657).

2566449 is a wasteful number, since it uses less digits than its factorization.

2566449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285167 (or 285164 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 2566449 is about 1602.0140448823. The cubic root of 2566449 is about 136.9128506067.

The spelling of 2566449 in words is "two million, five hundred sixty-six thousand, four hundred forty-nine".