63023221 has 4 divisors (see below), whose sum is σ = 63910944. Its totient is φ = 62135500.

The previous prime is 63023179. The next prime is 63023231. The reversal of 63023221 is 12232036.

63023221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63023221 - 2⁹ = 63022709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63023231) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 443755 + ... + 443896.

It is an arithmetic number, because the mean of its divisors is an integer number (15977736).

Almost surely, 2^63023221 is an apocalyptic number.

It is an amenable number.

63023221 is a deficient number, since it is larger than the sum of its proper divisors (887723).

63023221 is an equidigital number, since it uses as much as digits as its factorization.

63023221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887722.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 63023221 is about 7938.7165839322. The cubic root of 63023221 is about 397.9546024497.

Adding to 63023221 its reverse (12232036), we get a palindrome (75255257).

The spelling of 63023221 in words is "sixty-three million, twenty-three thousand, two hundred twenty-one".