10955561 has 2 divisors, whose sum is σ = 10955562. Its totient is φ = 10955560.

The previous prime is 10955557. The next prime is 10955573. The reversal of 10955561 is 16555901.

10955561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10601536 + 354025 = 3256^2 + 595^2 .

It is a cyclic number.

It is not a de Polignac number, because 10955561 - 2² = 10955557 is a prime.

It is not a weakly prime, because it can be changed into another prime (10955501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5477780 + 5477781.

It is an arithmetic number, because the mean of its divisors is an integer number (5477781).

Almost surely, 2^10955561 is an apocalyptic number.

It is an amenable number.

10955561 is a deficient number, since it is larger than the sum of its proper divisors (1).

10955561 is an equidigital number, since it uses as much as digits as its factorization.

10955561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6750, while the sum is 32.

The square root of 10955561 is about 3309.9185790590. The cubic root of 10955561 is about 222.0981156000.

The spelling of 10955561 in words is "ten million, nine hundred fifty-five thousand, five hundred sixty-one".