2857251 has 8 divisors (see below), whose sum is σ = 3912784. Its totient is φ = 1853280.

The previous prime is 2857247. The next prime is 2857259. The reversal of 2857251 is 1527582.

2857251 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 2857251 - 2² = 2857247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2857259) by changing a digit.

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, 12760 + ... + 12981.

It is an arithmetic number, because the mean of its divisors is an integer number (489098).

2^2857251 is an apocalyptic number.

2857251 is a deficient number, since it is larger than the sum of its proper divisors (1055533).

2857251 is a wasteful number, since it uses less digits than its factorization.

2857251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25781.

The product of its digits is 5600, while the sum is 30.

The square root of 2857251 is about 1690.3404982429. The cubic root of 2857251 is about 141.9001314585.

The spelling of 2857251 in words is "two million, eight hundred fifty-seven thousand, two hundred fifty-one".