2566535 has 4 divisors (see below), whose sum is σ = 3079848. Its totient is φ = 2053224.

The previous prime is 2566519. The next prime is 2566549. The reversal of 2566535 is 5356652.

2566535 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2566535 - 2⁴ = 2566519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 256649 + ... + 256658.

It is an arithmetic number, because the mean of its divisors is an integer number (769962).

2^2566535 is an apocalyptic number.

2566535 is a deficient number, since it is larger than the sum of its proper divisors (513313).

2566535 is an equidigital number, since it uses as much as digits as its factorization.

2566535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513312.

The product of its digits is 27000, while the sum is 32.

The square root of 2566535 is about 1602.0408858703. The cubic root of 2566535 is about 136.9143798758.

The spelling of 2566535 in words is "two million, five hundred sixty-six thousand, five hundred thirty-five".