108921775 has 12 divisors (see below), whose sum is σ = 142172200. Its totient is φ = 82550880.

The previous prime is 108921773. The next prime is 108921781. The reversal of 108921775 is 577129801.

It is not a de Polignac number, because 108921775 - 2¹ = 108921773 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108921773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114180 + ... + 115129.

Almost surely, 2^108921775 is an apocalyptic number.

108921775 is a deficient number, since it is larger than the sum of its proper divisors (33250425).

108921775 is a wasteful number, since it uses less digits than its factorization.

108921775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229338 (or 229333 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 40.

The square root of 108921775 is about 10436.5595384686. The cubic root of 108921775 is about 477.5713187152.

The spelling of 108921775 in words is "one hundred eight million, nine hundred twenty-one thousand, seven hundred seventy-five".