2273561 has 2 divisors, whose sum is σ = 2273562. Its totient is φ = 2273560.

The previous prime is 2273549. The next prime is 2273567. The reversal of 2273561 is 1653722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2157961 + 115600 = 1469^2 + 340^2 .

It is a cyclic number.

It is not a de Polignac number, because 2273561 - 2⁶ = 2273497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2273561.

It is not a weakly prime, because it can be changed into another prime (2273567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1136780 + 1136781.

It is an arithmetic number, because the mean of its divisors is an integer number (1136781).

2^2273561 is an apocalyptic number.

It is an amenable number.

2273561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2273561 is an equidigital number, since it uses as much as digits as its factorization.

2273561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 26.

The square root of 2273561 is about 1507.8332135883. The cubic root of 2273561 is about 131.4928697334.

The spelling of 2273561 in words is "two million, two hundred seventy-three thousand, five hundred sixty-one".