2871457 has 2 divisors, whose sum is σ = 2871458. Its totient is φ = 2871456.

The previous prime is 2871439. The next prime is 2871467. The reversal of 2871457 is 7541782.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1535121 + 1336336 = 1239^2 + 1156^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2871457 is a prime.

It is not a weakly prime, because it can be changed into another prime (2871467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1435728 + 1435729.

It is an arithmetic number, because the mean of its divisors is an integer number (1435729).

2^2871457 is an apocalyptic number.

It is an amenable number.

2871457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2871457 is an equidigital number, since it uses as much as digits as its factorization.

2871457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15680, while the sum is 34.

The square root of 2871457 is about 1694.5374000004. The cubic root of 2871457 is about 142.1349144273.

The spelling of 2871457 in words is "two million, eight hundred seventy-one thousand, four hundred fifty-seven".