4280561 has 2 divisors, whose sum is σ = 4280562. Its totient is φ = 4280560.

The previous prime is 4280537. The next prime is 4280581. The reversal of 4280561 is 1650824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3763600 + 516961 = 1940^2 + 719^2 .

It is a cyclic number.

It is not a de Polignac number, because 4280561 - 2¹⁰ = 4279537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4280561.

It is not a weakly prime, because it can be changed into another prime (4280531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2140280 + 2140281.

It is an arithmetic number, because the mean of its divisors is an integer number (2140281).

Almost surely, 2^4280561 is an apocalyptic number.

It is an amenable number.

4280561 is a deficient number, since it is larger than the sum of its proper divisors (1).

4280561 is an equidigital number, since it uses as much as digits as its factorization.

4280561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 4280561 is about 2068.9516669077. The cubic root of 4280561 is about 162.3679210786.

The spelling of 4280561 in words is "four million, two hundred eighty thousand, five hundred sixty-one".