30055530 has 64 divisors (see below), whose sum is σ = 77160960. Its totient is φ = 7470144.

The previous prime is 30055517. The next prime is 30055537. The reversal of 30055530 is 3555003.

It is a junction number, because it is equal to n+sod(n) for n = 30055497 and 30055506.

It is not an unprimeable number, because it can be changed into a prime (30055537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37797 + ... + 38583.

It is an arithmetic number, because the mean of its divisors is an integer number (1205640).

Almost surely, 2^30055530 is an apocalyptic number.

30055530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30055530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38580480).

30055530 is an abundant number, since it is smaller than the sum of its proper divisors (47105430).

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

30055530 is a wasteful number, since it uses less digits than its factorization.

30055530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883.

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

The square root of 30055530 is about 5482.2924037304. The cubic root of 30055530 is about 310.9148486736.

The spelling of 30055530 in words is "thirty million, fifty-five thousand, five hundred thirty".