55333120 has 72 divisors (see below), whose sum is σ = 133922880. Its totient is φ = 21903360.

The previous prime is 55333097. The next prime is 55333123. The reversal of 55333120 is 2133355.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 55333091 and 55333100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55333123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177765 + ... + 178075.

It is an arithmetic number, because the mean of its divisors is an integer number (1860040).

Almost surely, 2^55333120 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 55333120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66961440).

55333120 is an abundant number, since it is smaller than the sum of its proper divisors (78589760).

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

55333120 is a wasteful number, since it uses less digits than its factorization.

55333120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 55333120 is about 7438.6235285838. The cubic root of 55333120 is about 381.0614827194.

Adding to 55333120 its reverse (2133355), we get a palindrome (57466475).

The spelling of 55333120 in words is "fifty-five million, three hundred thirty-three thousand, one hundred twenty".