2987257 has 16 divisors (see below), whose sum is σ = 3894912. Its totient is φ = 2223360.

The previous prime is 2987251. The next prime is 2987279. The reversal of 2987257 is 7527892.

It is a cyclic number.

It is not a de Polignac number, because 2987257 - 2¹¹ = 2985209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2987251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 582 + ... + 2512.

It is an arithmetic number, because the mean of its divisors is an integer number (243432).

2^2987257 is an apocalyptic number.

It is an amenable number.

2987257 is a deficient number, since it is larger than the sum of its proper divisors (907655).

2987257 is a wasteful number, since it uses less digits than its factorization.

2987257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968.

The product of its digits is 70560, while the sum is 40.

The square root of 2987257 is about 1728.3683056571. The cubic root of 2987257 is about 144.0204606986.

It can be divided in two parts, 29872 and 57, that added together give a square (29929 = 173²).

The spelling of 2987257 in words is "two million, nine hundred eighty-seven thousand, two hundred fifty-seven".