2857901 has 6 divisors (see below), whose sum is σ = 2910702. Its totient is φ = 2806040.

The previous prime is 2857891. The next prime is 2857903. The reversal of 2857901 is 1097582.

It can be written as a sum of positive squares in only one way, i.e., 2175625 + 682276 = 1475^2 + 826^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2857901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2857903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3071 + ... + 3891.

It is an arithmetic number, because the mean of its divisors is an integer number (485117).

2^2857901 is an apocalyptic number.

It is an amenable number.

2857901 is a deficient number, since it is larger than the sum of its proper divisors (52801).

2857901 is an frugal number, since it uses more digits than its factorization.

2857901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939 (or 880 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 2857901 is about 1690.5327562635. The cubic root of 2857901 is about 141.9108909954.

The spelling of 2857901 in words is "two million, eight hundred fifty-seven thousand, nine hundred one".