30005500 has 48 divisors (see below), whose sum is σ = 74902464. Its totient is φ = 10286400.

The previous prime is 30005491. The next prime is 30005519. The reversal of 30005500 is 550003.

30005500 is a modest number, since divided by 5500 gives 3000 as remainder.

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, 787 + ... + 7786.

It is an arithmetic number, because the mean of its divisors is an integer number (1560468).

Almost surely, 2^30005500 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 30005500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37451232).

30005500 is an abundant number, since it is smaller than the sum of its proper divisors (44896964).

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

30005500 is a wasteful number, since it uses less digits than its factorization.

30005500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8599 (or 8587 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 13.

The square root of 30005500 is about 5477.7276310529. The cubic root of 30005500 is about 310.7422380782.

Adding to 30005500 its reverse (550003), we get a palindrome (30555503).

The spelling of 30005500 in words is "thirty million, five thousand, five hundred".