55065648 has 120 divisors (see below), whose sum is σ = 164920000. Its totient is φ = 15776640.

The previous prime is 55065631. The next prime is 55065649. The reversal of 55065648 is 84656055.

It is a super-3 number, since 3×55065648³ (a number of 24 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (55065649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110103 + ... + 110601.

Almost surely, 2^55065648 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 55065648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82460000).

55065648 is an abundant number, since it is smaller than the sum of its proper divisors (109854352).

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

55065648 is a wasteful number, since it uses less digits than its factorization.

55065648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 534 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 39.

The square root of 55065648 is about 7420.6231544258. The cubic root of 55065648 is about 380.4464927180.

The spelling of 55065648 in words is "fifty-five million, sixty-five thousand, six hundred forty-eight".