2247581 has 6 divisors (see below), whose sum is σ = 2614590. Its totient is φ = 1926456.

The previous prime is 2247577. The next prime is 2247611. The reversal of 2247581 is 1857422.

2247581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2059225 + 188356 = 1435^2 + 434^2 .

It is not a de Polignac number, because 2247581 - 2² = 2247577 is a prime.

It is a super-2 number, since 2×2247581² = 10103240703122, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2 + 2²¹ + 4 + 7⁶ + 5 + 8⁵ + 1 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2247521) 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 5 ways as a sum of consecutive naturals, for example, 22886 + ... + 22983.

It is an arithmetic number, because the mean of its divisors is an integer number (435765).

2^2247581 is an apocalyptic number.

It is an amenable number.

2247581 is a deficient number, since it is larger than the sum of its proper divisors (367009).

2247581 is an equidigital number, since it uses as much as digits as its factorization.

2247581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45883 (or 45876 counting only the distinct ones).

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

The square root of 2247581 is about 1499.1934498256. The cubic root of 2247581 is about 130.9900930682.

The spelling of 2247581 in words is "two million, two hundred forty-seven thousand, five hundred eighty-one".