63234221 has 4 divisors (see below), whose sum is σ = 64943292. Its totient is φ = 61525152.

The previous prime is 63234217. The next prime is 63234277. The reversal of 63234221 is 12243236.

63234221 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.

It can be written as a sum of positive squares in 2 ways, for example, as 61058596 + 2175625 = 7814^2 + 1475^2 .

It is a cyclic number.

It is not a de Polignac number, because 63234221 - 2² = 63234217 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 (63234211) 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, 854480 + ... + 854553.

It is an arithmetic number, because the mean of its divisors is an integer number (16235823).

Almost surely, 2^63234221 is an apocalyptic number.

It is an amenable number.

63234221 is a deficient number, since it is larger than the sum of its proper divisors (1709071).

63234221 is a wasteful number, since it uses less digits than its factorization.

63234221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709070.

The product of its digits is 1728, while the sum is 23.

The square root of 63234221 is about 7951.9947811854. The cubic root of 63234221 is about 398.3982214085.

Adding to 63234221 its reverse (12243236), we get a palindrome (75477457).

The spelling of 63234221 in words is "sixty-three million, two hundred thirty-four thousand, two hundred twenty-one".