2857291 has 4 divisors (see below), whose sum is σ = 2860792. Its totient is φ = 2853792.

The previous prime is 2857259. The next prime is 2857297. The reversal of 2857291 is 1927582.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2857291 - 2⁵ = 2857259 is a prime.

It is a super-2 number, since 2×2857291² = 16328223717362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2857297) 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, 196 + ... + 2398.

It is an arithmetic number, because the mean of its divisors is an integer number (715198).

2^2857291 is an apocalyptic number.

2857291 is a deficient number, since it is larger than the sum of its proper divisors (3501).

2857291 is a wasteful number, since it uses less digits than its factorization.

2857291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500.

The product of its digits is 10080, while the sum is 34.

The square root of 2857291 is about 1690.3523301371. The cubic root of 2857291 is about 141.9007936310.

The spelling of 2857291 in words is "two million, eight hundred fifty-seven thousand, two hundred ninety-one".