10775561 has 2 divisors, whose sum is σ = 10775562. Its totient is φ = 10775560.

The previous prime is 10775533. The next prime is 10775563. The reversal of 10775561 is 16557701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10758400 + 17161 = 3280^2 + 131^2 .

It is a cyclic number.

It is not a de Polignac number, because 10775561 - 2¹⁰ = 10774537 is a prime.

It is a super-2 number, since 2×10775561² = 232225429729442, which contains 22 as substring.

Together with 10775563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10775563) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5387780 + 5387781.

It is an arithmetic number, because the mean of its divisors is an integer number (5387781).

Almost surely, 2^10775561 is an apocalyptic number.

It is an amenable number.

10775561 is a deficient number, since it is larger than the sum of its proper divisors (1).

10775561 is an equidigital number, since it uses as much as digits as its factorization.

10775561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7350, while the sum is 32.

The square root of 10775561 is about 3282.6149637141. The cubic root of 10775561 is about 220.8750342831.

The spelling of 10775561 in words is "ten million, seven hundred seventy-five thousand, five hundred sixty-one".