2451871 has 2 divisors, whose sum is σ = 2451872. Its totient is φ = 2451870.

The previous prime is 2451857. The next prime is 2451881. The reversal of 2451871 is 1781542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2451871 - 2⁹ = 2451359 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2451811) 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, 1225935 + 1225936.

It is an arithmetic number, because the mean of its divisors is an integer number (1225936).

2^2451871 is an apocalyptic number.

2451871 is a deficient number, since it is larger than the sum of its proper divisors (1).

2451871 is an equidigital number, since it uses as much as digits as its factorization.

2451871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2240, while the sum is 28.

The square root of 2451871 is about 1565.8451392140. The cubic root of 2451871 is about 134.8442831906.

It can be divided in two parts, 245 and 1871, that added together give a square (2116 = 46²).

The spelling of 2451871 in words is "two million, four hundred fifty-one thousand, eight hundred seventy-one".