2566091 has 8 divisors (see below), whose sum is σ = 2813184. Its totient is φ = 2321320.

The previous prime is 2566073. The next prime is 2566093. The reversal of 2566091 is 1906652.

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

It is a cyclic number.

It is not a de Polignac number, because 2566091 - 2⁶ = 2566027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2566093) 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 7 ways as a sum of consecutive naturals, for example, 2450 + ... + 3336.

It is an arithmetic number, because the mean of its divisors is an integer number (351648).

2^2566091 is an apocalyptic number.

2566091 is a deficient number, since it is larger than the sum of its proper divisors (247093).

2566091 is a wasteful number, since it uses less digits than its factorization.

2566091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161.

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

The square root of 2566091 is about 1601.9023066342. The cubic root of 2566091 is about 136.9064842123.

The spelling of 2566091 in words is "two million, five hundred sixty-six thousand, ninety-one".