63921552 has 20 divisors (see below), whose sum is σ = 165130800. Its totient is φ = 21307168.

The previous prime is 63921527. The next prime is 63921569. The reversal of 63921552 is 25512936.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665802 + ... + 665897.

It is an arithmetic number, because the mean of its divisors is an integer number (8256540).

Almost surely, 2^63921552 is an apocalyptic number.

It is an amenable number.

63921552 is an abundant number, since it is smaller than the sum of its proper divisors (101209248).

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

63921552 is a wasteful number, since it uses less digits than its factorization.

63921552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331710 (or 1331704 counting only the distinct ones).

The product of its digits is 16200, while the sum is 33.

The square root of 63921552 is about 7995.0954966154. The cubic root of 63921552 is about 399.8364998450.

The spelling of 63921552 in words is "sixty-three million, nine hundred twenty-one thousand, five hundred fifty-two".