2257145 has 8 divisors (see below), whose sum is σ = 2954880. Its totient is φ = 1641520.

The previous prime is 2257139. The next prime is 2257169. The reversal of 2257145 is 5417522.

2257145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2257145 - 2²⁰ = 1208569 is a prime.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 20465 + ... + 20574.

It is an arithmetic number, because the mean of its divisors is an integer number (369360).

2^2257145 is an apocalyptic number.

It is an amenable number.

2257145 is a deficient number, since it is larger than the sum of its proper divisors (697735).

2257145 is a wasteful number, since it uses less digits than its factorization.

2257145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41055.

The product of its digits is 2800, while the sum is 26.

The square root of 2257145 is about 1502.3797788842. The cubic root of 2257145 is about 131.1756283118.

The spelling of 2257145 in words is "two million, two hundred fifty-seven thousand, one hundred forty-five".