2278361 has 2 divisors, whose sum is σ = 2278362. Its totient is φ = 2278360.

The previous prime is 2278343. The next prime is 2278379. The reversal of 2278361 is 1638722.

It is a happy number.

2278361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (2278343) and next prime (2278379).

It can be written as a sum of positive squares in only one way, i.e., 1394761 + 883600 = 1181^2 + 940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2278361 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2278301) 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 as a sum of consecutive naturals, namely, 1139180 + 1139181.

It is an arithmetic number, because the mean of its divisors is an integer number (1139181).

2^2278361 is an apocalyptic number.

It is an amenable number.

2278361 is a deficient number, since it is larger than the sum of its proper divisors (1).

2278361 is an equidigital number, since it uses as much as digits as its factorization.

2278361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 2278361 is about 1509.4240623496. The cubic root of 2278361 is about 131.5853417215.

The spelling of 2278361 in words is "two million, two hundred seventy-eight thousand, three hundred sixty-one".