2154871 has 2 divisors, whose sum is σ = 2154872. Its totient is φ = 2154870.

The previous prime is 2154853. The next prime is 2154881. The reversal of 2154871 is 1784512.

2154871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2154871 - 2⁵ = 2154839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2154811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077435 + 1077436.

It is an arithmetic number, because the mean of its divisors is an integer number (1077436).

2^2154871 is an apocalyptic number.

2154871 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154871 is an equidigital number, since it uses as much as digits as its factorization.

2154871 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 2154871 is about 1467.9478873584. The cubic root of 2154871 is about 129.1636846115.

It can be divided in two parts, 2154 and 871, that added together give a square (3025 = 55²).

The spelling of 2154871 in words is "two million, one hundred fifty-four thousand, eight hundred seventy-one".