63521248 has 72 divisors (see below), whose sum is σ = 154096992. Its totient is φ = 25611264.

The previous prime is 63521243. The next prime is 63521251. The reversal of 63521248 is 84212536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63521243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25465 + ... + 27847.

It is an arithmetic number, because the mean of its divisors is an integer number (2140236).

Almost surely, 2^63521248 is an apocalyptic number.

63521248 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63521248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77048496).

63521248 is an abundant number, since it is smaller than the sum of its proper divisors (90575744).

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

63521248 is a wasteful number, since it uses less digits than its factorization.

63521248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424 (or 2409 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 63521248 is about 7970.0218318396. The cubic root of 63521248 is about 399.0001025956. Note that the first 3 decimals are identical.

The spelling of 63521248 in words is "sixty-three million, five hundred twenty-one thousand, two hundred forty-eight".