2257845 has 8 divisors (see below), whose sum is σ = 3612576. Its totient is φ = 1204176.

The previous prime is 2257837. The next prime is 2257859. The reversal of 2257845 is 5487522.

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

It is not a de Polignac number, because 2257845 - 2³ = 2257837 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2²⁰ + 2²⁰ + 5⁷ + 7³ + 8⁴ + 4 + 5⁷ .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75247 + ... + 75276.

It is an arithmetic number, because the mean of its divisors is an integer number (451572).

2^2257845 is an apocalyptic number.

It is an amenable number.

2257845 is a deficient number, since it is larger than the sum of its proper divisors (1354731).

2257845 is a wasteful number, since it uses less digits than its factorization.

2257845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150531.

The product of its digits is 22400, while the sum is 33.

The square root of 2257845 is about 1502.6127245568. The cubic root of 2257845 is about 131.1891872472.

The spelling of 2257845 in words is "two million, two hundred fifty-seven thousand, eight hundred forty-five".