2859257 has 4 divisors (see below), whose sum is σ = 2875236. Its totient is φ = 2843280.

The previous prime is 2859251. The next prime is 2859271. The reversal of 2859257 is 7529582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7529582 = 2 ⋅3764791.

It can be written as a sum of positive squares in 2 ways, for example, as 817216 + 2042041 = 904^2 + 1429^2 .

It is a cyclic number.

It is not a de Polignac number, because 2859257 - 2⁸ = 2859001 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2859257.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2859251) 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, 7718 + ... + 8079.

It is an arithmetic number, because the mean of its divisors is an integer number (718809).

2^2859257 is an apocalyptic number.

It is an amenable number.

2859257 is a deficient number, since it is larger than the sum of its proper divisors (15979).

2859257 is a wasteful number, since it uses less digits than its factorization.

2859257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15978.

The product of its digits is 50400, while the sum is 38.

The square root of 2859257 is about 1690.9337657046. The cubic root of 2859257 is about 141.9333317939.

The spelling of 2859257 in words is "two million, eight hundred fifty-nine thousand, two hundred fifty-seven".