2225761 has 4 divisors (see below), whose sum is σ = 2245572. Its totient is φ = 2205952.

The previous prime is 2225753. The next prime is 2225771. The reversal of 2225761 is 1675222.

2225761 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: 1675222 = 2 ⋅837611.

It can be written as a sum of positive squares in 2 ways, for example, as 140625 + 2085136 = 375^2 + 1444^2 .

It is a cyclic number.

It is not a de Polignac number, because 2225761 - 2³ = 2225753 is a prime.

It is a d-powerful number, because it can be written as 2¹⁴ + 2¹⁶ + 2²¹ + 5² + 7 + 6⁶ + 1 .

It is a Duffinian number.

2225761 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2225701) 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, 9736 + ... + 9961.

It is an arithmetic number, because the mean of its divisors is an integer number (561393).

2^2225761 is an apocalyptic number.

It is an amenable number.

2225761 is a deficient number, since it is larger than the sum of its proper divisors (19811).

2225761 is a wasteful number, since it uses less digits than its factorization.

2225761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19810.

The product of its digits is 1680, while the sum is 25.

The square root of 2225761 is about 1491.8984549895. The cubic root of 2225761 is about 130.5648205353.

The spelling of 2225761 in words is "two million, two hundred twenty-five thousand, seven hundred sixty-one".