2566901 has 4 divisors (see below), whose sum is σ = 2580000. Its totient is φ = 2553804.

The previous prime is 2566897. The next prime is 2566909. The reversal of 2566901 is 1096652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2566901 - 2² = 2566897 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6251 + ... + 6648.

It is an arithmetic number, because the mean of its divisors is an integer number (645000).

2^2566901 is an apocalyptic number.

It is an amenable number.

2566901 is a deficient number, since it is larger than the sum of its proper divisors (13099).

2566901 is a wasteful number, since it uses less digits than its factorization.

2566901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13098.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 2566901 is about 1602.1551110926. The cubic root of 2566901 is about 136.9208877786.

The spelling of 2566901 in words is "two million, five hundred sixty-six thousand, nine hundred one".