63553040 has 20 divisors (see below), whose sum is σ = 147761004. Its totient is φ = 25421184.

The previous prime is 63553037. The next prime is 63553073. The reversal of 63553040 is 4035536.

63553040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 23001616 + 40551424 = 4796^2 + 6368^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

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, 397127 + ... + 397286.

Almost surely, 2^63553040 is an apocalyptic number.

It is an amenable number.

63553040 is an abundant number, since it is smaller than the sum of its proper divisors (84207964).

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

63553040 is a wasteful number, since it uses less digits than its factorization.

63553040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794426 (or 794420 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 63553040 is about 7972.0160561805. The cubic root of 63553040 is about 399.0666572053.

Adding to 63553040 its reverse (4035536), we get a palindrome (67588576).

The spelling of 63553040 in words is "sixty-three million, five hundred fifty-three thousand, forty".