2275661 has 4 divisors (see below), whose sum is σ = 2318652. Its totient is φ = 2232672.

The previous prime is 2275657. The next prime is 2275667. The reversal of 2275661 is 1665722.

2275661 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, and also an emirpimes, since its reverse is a distinct semiprime: 1665722 = 2 ⋅832861.

It can be written as a sum of positive squares in 2 ways, for example, as 570025 + 1705636 = 755^2 + 1306^2 .

It is a cyclic number.

It is not a de Polignac number, because 2275661 - 2² = 2275657 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 2¹⁵ + 7 + 5⁹ + 6⁵ + 6⁷ + 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 (2275667) 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, 21416 + ... + 21521.

It is an arithmetic number, because the mean of its divisors is an integer number (579663).

2^2275661 is an apocalyptic number.

It is an amenable number.

2275661 is a deficient number, since it is larger than the sum of its proper divisors (42991).

2275661 is an equidigital number, since it uses as much as digits as its factorization.

2275661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42990.

The product of its digits is 5040, while the sum is 29.

The square root of 2275661 is about 1508.5294163522. The cubic root of 2275661 is about 131.5333422274.

The spelling of 2275661 in words is "two million, two hundred seventy-five thousand, six hundred sixty-one".