63021056 has 84 divisors (see below), whose sum is σ = 147545298. Its totient is φ = 26836992.

The previous prime is 63021053. The next prime is 63021061. The reversal of 63021056 is 65012036.

It can be written as a sum of positive squares in only one way, i.e., 58003456 + 5017600 = 7616^2 + 2240^2 .

It is not an unprimeable number, because it can be changed into a prime (63021053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 401330 + ... + 401486.

Almost surely, 2^63021056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63021056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73772649).

63021056 is an abundant number, since it is smaller than the sum of its proper divisors (84524242).

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

63021056 is an equidigital number, since it uses as much as digits as its factorization.

63021056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 63021056 is about 7938.5802257079. The cubic root of 63021056 is about 397.9500454967.

The spelling of 63021056 in words is "sixty-three million, twenty-one thousand, fifty-six".