221093875 has 16 divisors (see below), whose sum is σ = 281803392. Its totient is φ = 173107200.

The previous prime is 221093867. The next prime is 221093893. The reversal of 221093875 is 578390122.

It is not a de Polignac number, because 221093875 - 2³ = 221093867 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12942 + ... + 24691.

It is an arithmetic number, because the mean of its divisors is an integer number (17612712).

Almost surely, 2^221093875 is an apocalyptic number.

221093875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

221093875 is a deficient number, since it is larger than the sum of its proper divisors (60709517).

221093875 is an equidigital number, since it uses as much as digits as its factorization.

221093875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37695 (or 37685 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 221093875 is about 14869.2257700258. The cubic root of 221093875 is about 604.6799527554.

The spelling of 221093875 in words is "two hundred twenty-one million, ninety-three thousand, eight hundred seventy-five".