108921056 has 12 divisors (see below), whose sum is σ = 214438392. Its totient is φ = 54460512.

The previous prime is 108921049. The next prime is 108921061. The reversal of 108921056 is 650129801.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 3403783 = 108921056 / (1 + 0 + 8 + 9 + 2 + 1 + 0 + 5 + 6).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

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, 1701860 + ... + 1701923.

It is an arithmetic number, because the mean of its divisors is an integer number (17869866).

Almost surely, 2^108921056 is an apocalyptic number.

108921056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

108921056 is a deficient number, since it is larger than the sum of its proper divisors (105517336).

108921056 is an equidigital number, since it uses as much as digits as its factorization.

108921056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3403793 (or 3403785 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 108921056 is about 10436.5250921942. The cubic root of 108921056 is about 477.5702678860.

The spelling of 108921056 in words is "one hundred eight million, nine hundred twenty-one thousand, fifty-six".