2273081 has 4 divisors (see below), whose sum is σ = 2328564. Its totient is φ = 2217600.

The previous prime is 2273077. The next prime is 2273083. The reversal of 2273081 is 1803722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1803722 = 2 ⋅901861.

It can be written as a sum of positive squares in 2 ways, for example, as 477481 + 1795600 = 691^2 + 1340^2 .

It is a cyclic number.

It is not a de Polignac number, because 2273081 - 2² = 2273077 is a prime.

It is a super-2 number, since 2×2273081² = 10333794465122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2273083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27680 + ... + 27761.

It is an arithmetic number, because the mean of its divisors is an integer number (582141).

2^2273081 is an apocalyptic number.

It is an amenable number.

2273081 is a deficient number, since it is larger than the sum of its proper divisors (55483).

2273081 is an equidigital number, since it uses as much as digits as its factorization.

2273081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55482.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 2273081 is about 1507.6740363885. The cubic root of 2273081 is about 131.4836153787.

The spelling of 2273081 in words is "two million, two hundred seventy-three thousand, eighty-one".