2257843 has 4 divisors (see below), whose sum is σ = 2580400. Its totient is φ = 1935288.

The previous prime is 2257837. The next prime is 2257859. The reversal of 2257843 is 3487522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3487522 = 2 ⋅1743761.

It is a cyclic number.

It is not a de Polignac number, because 2257843 - 2¹⁷ = 2126771 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2257813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161268 + ... + 161281.

It is an arithmetic number, because the mean of its divisors is an integer number (645100).

2^2257843 is an apocalyptic number.

2257843 is a deficient number, since it is larger than the sum of its proper divisors (322557).

2257843 is an equidigital number, since it uses as much as digits as its factorization.

2257843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322556.

The product of its digits is 13440, while the sum is 31.

The square root of 2257843 is about 1502.6120590492. The cubic root of 2257843 is about 131.1891485113.

The spelling of 2257843 in words is "two million, two hundred fifty-seven thousand, eight hundred forty-three".