55230 has 32 divisors (see below), whose sum is σ = 152064. Its totient is φ = 12576.

The previous prime is 55229. The next prime is 55243. The reversal of 55230 is 3255.

55230 = 116² + 117² + ... + 119².

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79 + ... + 341.

It is an arithmetic number, because the mean of its divisors is an integer number (4752).

2⁵⁵²³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76032).

55230 is an abundant number, since it is smaller than the sum of its proper divisors (96834).

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

55230 is a wasteful number, since it uses less digits than its factorization.

55230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280.

The product of its (nonzero) digits is 150, while the sum is 15.

The square root of 55230 is about 235.0106380571. The cubic root of 55230 is about 38.0824617374.

Adding to 55230 its reverse (3255), we get a palindrome (58485).

The spelling of 55230 in words is "fifty-five thousand, two hundred thirty".