2566251 has 6 divisors (see below), whose sum is σ = 3706820. Its totient is φ = 1710828.

The previous prime is 2566241. The next prime is 2566253. The reversal of 2566251 is 1526652.

2566251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2566251 - 2⁵ = 2566219 is a prime.

It is a Duffinian number.

2566251 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2566253) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 142561 + ... + 142578.

2^2566251 is an apocalyptic number.

2566251 is a deficient number, since it is larger than the sum of its proper divisors (1140569).

2566251 is a wasteful number, since it uses less digits than its factorization.

2566251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285145 (or 285142 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 2566251 is about 1601.9522464793. The cubic root of 2566251 is about 136.9093296014.

The spelling of 2566251 in words is "two million, five hundred sixty-six thousand, two hundred fifty-one".