2271845 has 8 divisors (see below), whose sum is σ = 2777976. Its totient is φ = 1782976.

The previous prime is 2271827. The next prime is 2271859. The reversal of 2271845 is 5481722.

It can be written as a sum of positive squares in 4 ways, for example, as 261121 + 2010724 = 511^2 + 1418^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2271845 - 2⁶ = 2271781 is a prime.

It is a super-2 number, since 2×2271845² = 10322559408050, which contains 22 as substring.

It is a Duffinian 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, 4022 + ... + 4551.

It is an arithmetic number, because the mean of its divisors is an integer number (347247).

2^2271845 is an apocalyptic number.

It is an amenable number.

2271845 is a deficient number, since it is larger than the sum of its proper divisors (506131).

2271845 is an equidigital number, since it uses as much as digits as its factorization.

2271845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8631.

The product of its digits is 4480, while the sum is 29.

The square root of 2271845 is about 1507.2640777249. The cubic root of 2271845 is about 131.4597794173.

The spelling of 2271845 in words is "two million, two hundred seventy-one thousand, eight hundred forty-five".