2257565 has 16 divisors (see below), whose sum is σ = 2878848. Its totient is φ = 1695936.

The previous prime is 2257559. The next prime is 2257571. The reversal of 2257565 is 5657522.

2257565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2257559) and next prime (2257571).

It is a cyclic number.

It is not a de Polignac number, because 2257565 - 2⁸ = 2257309 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 15 ways as a sum of consecutive naturals, for example, 7559 + ... + 7851.

It is an arithmetic number, because the mean of its divisors is an integer number (179928).

2^2257565 is an apocalyptic number.

It is an amenable number.

2257565 is a deficient number, since it is larger than the sum of its proper divisors (621283).

2257565 is a wasteful number, since it uses less digits than its factorization.

2257565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388.

The product of its digits is 21000, while the sum is 32.

The square root of 2257565 is about 1502.5195506216. The cubic root of 2257565 is about 131.1837640094.

The spelling of 2257565 in words is "two million, two hundred fifty-seven thousand, five hundred sixty-five".