2261887 has 2 divisors, whose sum is σ = 2261888. Its totient is φ = 2261886.

The previous prime is 2261863. The next prime is 2261891. The reversal of 2261887 is 7881622.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2261887 - 2¹⁵ = 2229119 is a prime.

It is a super-2 number, since 2×2261887² = 10232265601538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2261807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130943 + 1130944.

It is an arithmetic number, because the mean of its divisors is an integer number (1130944).

2^2261887 is an apocalyptic number.

2261887 is a deficient number, since it is larger than the sum of its proper divisors (1).

2261887 is an equidigital number, since it uses as much as digits as its factorization.

2261887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 34.

The square root of 2261887 is about 1503.9571137503. The cubic root of 2261887 is about 131.2674256531.

The spelling of 2261887 in words is "two million, two hundred sixty-one thousand, eight hundred eighty-seven".