2261166 has 16 divisors (see below), whose sum is σ = 4547664. Its totient is φ = 749504.

The previous prime is 2261143. The next prime is 2261173. The reversal of 2261166 is 6611622.

It is a super-2 number, since 2×2261166² = 10225743359112, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226 + ... + 2138.

It is an arithmetic number, because the mean of its divisors is an integer number (284229).

2^2261166 is an apocalyptic number.

2261166 is an abundant number, since it is smaller than the sum of its proper divisors (2286498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2261166 is a wasteful number, since it uses less digits than its factorization.

2261166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115.

The product of its digits is 864, while the sum is 24.

The square root of 2261166 is about 1503.7173936615. The cubic root of 2261166 is about 131.2534765519.

Adding to 2261166 its reverse (6611622), we get a palindrome (8872788).

The spelling of 2261166 in words is "two million, two hundred sixty-one thousand, one hundred sixty-six".