2270581 has 4 divisors (see below), whose sum is σ = 2293164. Its totient is φ = 2248000.

The previous prime is 2270551. The next prime is 2270591. The reversal of 2270581 is 1850722.

2270581 = 1065² + 1066².

2270581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1134225 + 1136356 = 1065^2 + 1066^2 .

It is a cyclic number.

It is not a de Polignac number, because 2270581 - 2⁵ = 2270549 is a prime.

It is a super-2 number, since 2×2270581² = 10311076155122, 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 (2270531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11140 + ... + 11341.

It is an arithmetic number, because the mean of its divisors is an integer number (573291).

2^2270581 is an apocalyptic number.

2270581 is the 1066-th centered square number.

It is an amenable number.

2270581 is a deficient number, since it is larger than the sum of its proper divisors (22583).

2270581 is a wasteful number, since it uses less digits than its factorization.

2270581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22582.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 2270581 is about 1506.8447166181. The cubic root of 2270581 is about 131.4353945396.

The spelling of 2270581 in words is "two million, two hundred seventy thousand, five hundred eighty-one".