2887257 has 8 divisors (see below), whose sum is σ = 3931776. Its totient is φ = 1883792.

The previous prime is 2887237. The next prime is 2887279. The reversal of 2887257 is 7527882.

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

It is a cyclic number.

It is not a de Polignac number, because 2887257 - 2¹¹ = 2885209 is a prime.

2887257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2887207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10098 + ... + 10379.

It is an arithmetic number, because the mean of its divisors is an integer number (491472).

2^2887257 is an apocalyptic number.

It is an amenable number.

2887257 is a deficient number, since it is larger than the sum of its proper divisors (1044519).

2887257 is a wasteful number, since it uses less digits than its factorization.

2887257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20527.

The product of its digits is 62720, while the sum is 39.

The square root of 2887257 is about 1699.1930437711. The cubic root of 2887257 is about 142.3951336815.

The spelling of 2887257 in words is "two million, eight hundred eighty-seven thousand, two hundred fifty-seven".