55308 has 24 divisors (see below), whose sum is σ = 141120. Its totient is φ = 16720.

The previous prime is 55291. The next prime is 55313. The reversal of 55308 is 80355.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

55308 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78 + ... + 341.

It is an arithmetic number, because the mean of its divisors is an integer number (5880).

2⁵⁵³⁰⁸ is an apocalyptic number.

It is an amenable number.

55308 is an abundant number, since it is smaller than the sum of its proper divisors (85812).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70560).

55308 is a wasteful number, since it uses less digits than its factorization.

55308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 55308 is about 235.1765294412. The cubic root of 55308 is about 38.1003809525.

It can be divided in two parts, 55 and 308, that added together give a palindrome (363).

The spelling of 55308 in words is "fifty-five thousand, three hundred eight".