109585081 has 2 divisors, whose sum is σ = 109585082. Its totient is φ = 109585080.

The previous prime is 109585061. The next prime is 109585123. The reversal of 109585081 is 180585901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108493056 + 1092025 = 10416^2 + 1045^2 .

It is a cyclic number.

It is not a de Polignac number, because 109585081 - 2⁹ = 109584569 is a prime.

It is a super-2 number, since 2×109585081² = 24017779955553122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 109585081.

It is not a weakly prime, because it can be changed into another prime (109585001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54792540 + 54792541.

It is an arithmetic number, because the mean of its divisors is an integer number (54792541).

Almost surely, 2^109585081 is an apocalyptic number.

It is an amenable number.

109585081 is a deficient number, since it is larger than the sum of its proper divisors (1).

109585081 is an equidigital number, since it uses as much as digits as its factorization.

109585081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 37.

The square root of 109585081 is about 10468.2893062811. The cubic root of 109585081 is about 478.5387869111.

The spelling of 109585081 in words is "one hundred nine million, five hundred eighty-five thousand, eighty-one".