55311300 has 216 divisors, whose sum is σ = 195529152. Its totient is φ = 12960000.

The previous prime is 55311281. The next prime is 55311301. The reversal of 55311300 is 311355.

It is a happy number.

55311300 is a `hidden beast` number, since 5 + 531 + 130 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (55311301) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 366225 + ... + 366375.

Almost surely, 2^55311300 is an apocalyptic number.

55311300 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 55311300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97764576).

55311300 is an abundant number, since it is smaller than the sum of its proper divisors (140217852).

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

55311300 is a wasteful number, since it uses less digits than its factorization.

55311300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 55311300 is about 7437.1567147667. The cubic root of 55311300 is about 381.0113870158.

Adding to 55311300 its reverse (311355), we get a palindrome (55622655).

Subtracting from 55311300 its reverse (311355), we obtain a palindrome (54999945).

It can be divided in two parts, 55311 and 300, that added together give a triangular number (55611 = T₃₃₃).

The spelling of 55311300 in words is "fifty-five million, three hundred eleven thousand, three hundred".