55330308 has 72 divisors (see below), whose sum is σ = 161572320. Its totient is φ = 15778560.

The previous prime is 55330271. The next prime is 55330309. The reversal of 55330308 is 80303355.

It is a super-2 number, since 2×55330308² = 6122885966749728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55330309) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2623 + ... + 10841.

It is an arithmetic number, because the mean of its divisors is an integer number (2244060).

Almost surely, 2^55330308 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 55330308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80786160).

55330308 is an abundant number, since it is smaller than the sum of its proper divisors (106242012).

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

55330308 is a wasteful number, since it uses less digits than its factorization.

55330308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8257 (or 8252 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 55330308 is about 7438.4345127184. The cubic root of 55330308 is about 381.0550274954.

The spelling of 55330308 in words is "fifty-five million, three hundred thirty thousand, three hundred eight".