63221056 has 28 divisors (see below), whose sum is σ = 132059680. Its totient is φ = 29946240.

The previous prime is 63221047. The next prime is 63221099. The reversal of 63221056 is 65012236.

It is a self number, because there is not a number n which added to its sum of digits gives 63221056.

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 in 3 ways as a sum of consecutive naturals, for example, 24780 + ... + 27211.

Almost surely, 2^63221056 is an apocalyptic number.

It is an amenable number.

63221056 is an abundant number, since it is smaller than the sum of its proper divisors (68838624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63221056 is a wasteful number, since it uses less digits than its factorization.

63221056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52022 (or 52012 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 63221056 is about 7951.1669583779. The cubic root of 63221056 is about 398.3705714192.

The spelling of 63221056 in words is "sixty-three million, two hundred twenty-one thousand, fifty-six".