2154811 has 2 divisors, whose sum is σ = 2154812. Its totient is φ = 2154810.

The previous prime is 2154793. The next prime is 2154829. The reversal of 2154811 is 1184512.

It is a balanced prime because it is at equal distance from previous prime (2154793) and next prime (2154829).

It is a cyclic number.

It is not a de Polignac number, because 2154811 - 2⁷ = 2154683 is a prime.

It is a Chen prime.

2154811 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2154851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077405 + 1077406.

It is an arithmetic number, because the mean of its divisors is an integer number (1077406).

2^2154811 is an apocalyptic number.

2154811 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154811 is an equidigital number, since it uses as much as digits as its factorization.

2154811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 320, while the sum is 22.

The square root of 2154811 is about 1467.9274505234. The cubic root of 2154811 is about 129.1624857937.

Subtracting from 2154811 its reverse (1184512), we obtain a cube (970299 = 99³).

The spelling of 2154811 in words is "two million, one hundred fifty-four thousand, eight hundred eleven".