108934561 has 2 divisors, whose sum is σ = 108934562. Its totient is φ = 108934560.

The previous prime is 108934559. The next prime is 108934583. The reversal of 108934561 is 165439801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61324561 + 47610000 = 7831^2 + 6900^2 .

It is a cyclic number.

It is not a de Polignac number, because 108934561 - 2¹ = 108934559 is a prime.

Together with 108934559, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 108934561.

It is not a weakly prime, because it can be changed into another prime (108934541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54467280 + 54467281.

It is an arithmetic number, because the mean of its divisors is an integer number (54467281).

Almost surely, 2^108934561 is an apocalyptic number.

It is an amenable number.

108934561 is a deficient number, since it is larger than the sum of its proper divisors (1).

108934561 is an equidigital number, since it uses as much as digits as its factorization.

108934561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 108934561 is about 10437.1720786811. The cubic root of 108934561 is about 477.5900048716.

The spelling of 108934561 in words is "one hundred eight million, nine hundred thirty-four thousand, five hundred sixty-one".