2087257 has 4 divisors (see below), whose sum is σ = 2090880. Its totient is φ = 2083636.

The previous prime is 2087233. The next prime is 2087287. The reversal of 2087257 is 7527802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2087257 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2087287) 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, 733 + ... + 2170.

It is an arithmetic number, because the mean of its divisors is an integer number (522720).

2^2087257 is an apocalyptic number.

It is an amenable number.

2087257 is a deficient number, since it is larger than the sum of its proper divisors (3623).

2087257 is an equidigital number, since it uses as much as digits as its factorization.

2087257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3622.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 2087257 is about 1444.7342316149. The cubic root of 2087257 is about 127.7983682564.

The spelling of 2087257 in words is "two million, eighty-seven thousand, two hundred fifty-seven".