55248648 has 128 divisors (see below), whose sum is σ = 174424320. Its totient is φ = 14192640.

The previous prime is 55248617. The next prime is 55248649. The reversal of 55248648 is 84684255.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (55248649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89236 + ... + 89852.

It is an arithmetic number, because the mean of its divisors is an integer number (1362690).

Almost surely, 2^55248648 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 55248648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87212160).

55248648 is an abundant number, since it is smaller than the sum of its proper divisors (119175672).

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

55248648 is a wasteful number, since it uses less digits than its factorization.

55248648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687 (or 683 counting only the distinct ones).

The product of its digits is 307200, while the sum is 42.

The square root of 55248648 is about 7432.9434277411. The cubic root of 55248648 is about 380.8674734203.

The spelling of 55248648 in words is "fifty-five million, two hundred forty-eight thousand, six hundred forty-eight".