109785055 has 16 divisors (see below), whose sum is σ = 134348544. Its totient is φ = 86100480.

The previous prime is 109785029. The next prime is 109785073. The reversal of 109785055 is 550587901.

It is a de Polignac number, because none of the positive numbers 2^k-109785055 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109784999 and 109785017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180562 + ... + 181168.

It is an arithmetic number, because the mean of its divisors is an integer number (8396784).

Almost surely, 2^109785055 is an apocalyptic number.

109785055 is a deficient number, since it is larger than the sum of its proper divisors (24563489).

109785055 is an equidigital number, since it uses as much as digits as its factorization.

109785055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266.

The product of its (nonzero) digits is 63000, while the sum is 40.

The square root of 109785055 is about 10477.8363701673. The cubic root of 109785055 is about 478.8296938006.

The spelling of 109785055 in words is "one hundred nine million, seven hundred eighty-five thousand, fifty-five".