2047811 has 2 divisors, whose sum is σ = 2047812. Its totient is φ = 2047810.

The previous prime is 2047781. The next prime is 2047813. The reversal of 2047811 is 1187402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2047811 - 2¹⁰ = 2046787 is a prime.

Together with 2047813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2047813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1023905 + 1023906.

It is an arithmetic number, because the mean of its divisors is an integer number (1023906).

2^2047811 is an apocalyptic number.

2047811 is a deficient number, since it is larger than the sum of its proper divisors (1).

2047811 is an equidigital number, since it uses as much as digits as its factorization.

2047811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 2047811 is about 1431.0174701938. The cubic root of 2047811 is about 126.9881775425.

The spelling of 2047811 in words is "two million, forty-seven thousand, eight hundred eleven".