55300320 has 240 divisors, whose sum is σ = 207467568. Its totient is φ = 13824000.

The previous prime is 55300319. The next prime is 55300331. The reversal of 55300320 is 2300355.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 55300293 and 55300302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 220195 + ... + 220445.

Almost surely, 2^55300320 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 55300320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103733784).

55300320 is an abundant number, since it is smaller than the sum of its proper divisors (152167248).

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

55300320 is a wasteful number, since it uses less digits than its factorization.

55300320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 18.

The square root of 55300320 is about 7436.4184927961. The cubic root of 55300320 is about 380.9861734706.

Adding to 55300320 its reverse (2300355), we get a palindrome (57600675).

The spelling of 55300320 in words is "fifty-five million, three hundred thousand, three hundred twenty".