221055596 has 6 divisors (see below), whose sum is σ = 386847300. Its totient is φ = 110527796.

The previous prime is 221055577. The next prime is 221055623. The reversal of 221055596 is 695550122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27631946 + ... + 27631953.

It is an arithmetic number, because the mean of its divisors is an integer number (64474550).

Almost surely, 2^221055596 is an apocalyptic number.

It is an amenable number.

221055596 is a deficient number, since it is larger than the sum of its proper divisors (165791704).

221055596 is a wasteful number, since it uses less digits than its factorization.

221055596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55263903 (or 55263901 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 221055596 is about 14867.9385255657. The cubic root of 221055596 is about 604.6450537337.

The spelling of 221055596 in words is "two hundred twenty-one million, fifty-five thousand, five hundred ninety-six".