30056550 has 48 divisors (see below), whose sum is σ = 75090432. Its totient is φ = 7956000.

The previous prime is 30056549. The next prime is 30056563. The reversal of 30056550 is 5565003.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30056550.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21987 + ... + 23313.

It is an arithmetic number, because the mean of its divisors is an integer number (1564384).

Almost surely, 2^30056550 is an apocalyptic number.

30056550 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 30056550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37545216).

30056550 is an abundant number, since it is smaller than the sum of its proper divisors (45033882).

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

30056550 is a wasteful number, since it uses less digits than its factorization.

30056550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493 (or 1488 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 30056550 is about 5482.3854297194. The cubic root of 30056550 is about 310.9183658251.

The spelling of 30056550 in words is "thirty million, fifty-six thousand, five hundred fifty".