1075561 has 2 divisors, whose sum is σ = 1075562. Its totient is φ = 1075560.

The previous prime is 1075537. The next prime is 1075577. The reversal of 1075561 is 1655701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1010025 + 65536 = 1005^2 + 256^2 .

It is a cyclic number.

It is not a de Polignac number, because 1075561 - 2⁷ = 1075433 is a prime.

1075561 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1075531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 537780 + 537781.

It is an arithmetic number, because the mean of its divisors is an integer number (537781).

2^1075561 is an apocalyptic number.

It is an amenable number.

1075561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1075561 is an equidigital number, since it uses as much as digits as its factorization.

1075561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 1075561 is about 1037.0925706030. The cubic root of 1075561 is about 102.4577974190.

It can be divided in two parts, 10755 and 61, that added together give a square (10816 = 104²).

The spelling of 1075561 in words is "one million, seventy-five thousand, five hundred sixty-one".