55530300 has 144 divisors (see below), whose sum is σ = 189765632. Its totient is φ = 12268800.

The previous prime is 55530289. The next prime is 55530301. The reversal of 55530300 is 303555.

It is a super-2 number, since 2×55530300² = 6167228436180000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55530301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64674 + ... + 65526.

Almost surely, 2^55530300 is an apocalyptic number.

55530300 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55530300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94882816).

55530300 is an abundant number, since it is smaller than the sum of its proper divisors (134235332).

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

55530300 is a wasteful number, since it uses less digits than its factorization.

55530300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908 (or 901 counting only the distinct ones).

The product of its (nonzero) digits is 1125, while the sum is 21.

The square root of 55530300 is about 7451.8655382394. The cubic root of 55530300 is about 381.5135846322.

Adding to 55530300 its reverse (303555), we get a palindrome (55833855).

The spelling of 55530300 in words is "fifty-five million, five hundred thirty thousand, three hundred".