2261911 has 2 divisors, whose sum is σ = 2261912. Its totient is φ = 2261910.

The previous prime is 2261891. The next prime is 2261927. The reversal of 2261911 is 1191622.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2261911 - 2¹¹ = 2259863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2261111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130955 + 1130956.

It is an arithmetic number, because the mean of its divisors is an integer number (1130956).

2^2261911 is an apocalyptic number.

2261911 is a deficient number, since it is larger than the sum of its proper divisors (1).

2261911 is an equidigital number, since it uses as much as digits as its factorization.

2261911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 22.

The square root of 2261911 is about 1503.9650926800. The cubic root of 2261911 is about 131.2678899273.

The spelling of 2261911 in words is "two million, two hundred sixty-one thousand, nine hundred eleven".