2857601 has 4 divisors (see below), whose sum is σ = 2911572. Its totient is φ = 2803632.

The previous prime is 2857579. The next prime is 2857609. The reversal of 2857601 is 1067582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1048576 + 1809025 = 1024^2 + 1345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2857601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2857609) 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, 26906 + ... + 27011.

It is an arithmetic number, because the mean of its divisors is an integer number (727893).

2^2857601 is an apocalyptic number.

It is an amenable number.

2857601 is a deficient number, since it is larger than the sum of its proper divisors (53971).

2857601 is an equidigital number, since it uses as much as digits as its factorization.

2857601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53970.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 2857601 is about 1690.4440245095. Note that the first 3 decimals coincide. The cubic root of 2857601 is about 141.9059252580.

The spelling of 2857601 in words is "two million, eight hundred fifty-seven thousand, six hundred one".