10955509 has 2 divisors, whose sum is σ = 10955510. Its totient is φ = 10955508.

The previous prime is 10955507. The next prime is 10955543. The reversal of 10955509 is 90555901.

It is an a-pointer prime, because the next prime (10955543) can be obtained adding 10955509 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8427409 + 2528100 = 2903^2 + 1590^2 .

It is a cyclic number.

It is not a de Polignac number, because 10955509 - 2¹ = 10955507 is a prime.

Together with 10955507, it forms a pair of twin primes.

It is a congruent number.

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, 5477754 + 5477755.

It is an arithmetic number, because the mean of its divisors is an integer number (5477755).

Almost surely, 2^10955509 is an apocalyptic number.

It is an amenable number.

10955509 is a deficient number, since it is larger than the sum of its proper divisors (1).

10955509 is an equidigital number, since it uses as much as digits as its factorization.

10955509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10125, while the sum is 34.

The square root of 10955509 is about 3309.9107238716. The cubic root of 10955509 is about 222.0977642071.

The spelling of 10955509 in words is "ten million, nine hundred fifty-five thousand, five hundred nine".