2871901 has 2 divisors, whose sum is σ = 2871902. Its totient is φ = 2871900.

The previous prime is 2871881. The next prime is 2871917. The reversal of 2871901 is 1091782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1664100 + 1207801 = 1290^2 + 1099^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2871901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2871901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2871961) 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 as a sum of consecutive naturals, namely, 1435950 + 1435951.

It is an arithmetic number, because the mean of its divisors is an integer number (1435951).

2^2871901 is an apocalyptic number.

It is an amenable number.

2871901 is a deficient number, since it is larger than the sum of its proper divisors (1).

2871901 is an equidigital number, since it uses as much as digits as its factorization.

2871901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 2871901 is about 1694.6684041428. The cubic root of 2871901 is about 142.1422399359.

The spelling of 2871901 in words is "two million, eight hundred seventy-one thousand, nine hundred one".