2245861 has 2 divisors, whose sum is σ = 2245862. Its totient is φ = 2245860.

The previous prime is 2245849. The next prime is 2245871. The reversal of 2245861 is 1685422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1705636 + 540225 = 1306^2 + 735^2 .

It is a cyclic number.

It is not a de Polignac number, because 2245861 - 2¹⁵ = 2213093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2245811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1122930 + 1122931.

It is an arithmetic number, because the mean of its divisors is an integer number (1122931).

2^2245861 is an apocalyptic number.

It is an amenable number.

2245861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2245861 is an equidigital number, since it uses as much as digits as its factorization.

2245861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 28.

The square root of 2245861 is about 1498.6196982557. The cubic root of 2245861 is about 130.9566704008.

The spelling of 2245861 in words is "two million, two hundred forty-five thousand, eight hundred sixty-one".