2276581 has 4 divisors (see below), whose sum is σ = 2313964. Its totient is φ = 2239200.

The previous prime is 2276579. The next prime is 2276591. The reversal of 2276581 is 1856722.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 872356 + 1404225 = 934^2 + 1185^2 .

It is a cyclic number.

It is not a de Polignac number, because 2276581 - 2¹ = 2276579 is a prime.

It is a super-2 number, since 2×2276581² = 10365642099122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2276551) 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, 18600 + ... + 18721.

It is an arithmetic number, because the mean of its divisors is an integer number (578491).

2^2276581 is an apocalyptic number.

It is an amenable number.

2276581 is a deficient number, since it is larger than the sum of its proper divisors (37383).

2276581 is an equidigital number, since it uses as much as digits as its factorization.

2276581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37382.

The product of its digits is 6720, while the sum is 31.

The square root of 2276581 is about 1508.8343182735. The cubic root of 2276581 is about 131.5510651910.

The spelling of 2276581 in words is "two million, two hundred seventy-six thousand, five hundred eighty-one".