65551248 has 160 divisors (see below), whose sum is σ = 219628800. Its totient is φ = 18330624.

The previous prime is 65551243. The next prime is 65551249. The reversal of 65551248 is 84215556.

65551248 is a `hidden beast` number, since 65 + 551 + 2 + 48 = 666.

65551248 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65551248² = 8593932228715008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65551243) 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 31 ways as a sum of consecutive naturals, for example, 160068 + ... + 160476.

It is an arithmetic number, because the mean of its divisors is an integer number (1372680).

Almost surely, 2^65551248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65551248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109814400).

65551248 is an abundant number, since it is smaller than the sum of its proper divisors (154077552).

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

65551248 is a wasteful number, since it uses less digits than its factorization.

65551248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486 (or 474 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 65551248 is about 8096.3725210739. The cubic root of 65551248 is about 403.2060018948.

The spelling of 65551248 in words is "sixty-five million, five hundred fifty-one thousand, two hundred forty-eight".