30053550 has 24 divisors (see below), whose sum is σ = 74533176. Its totient is φ = 8014240.

The previous prime is 30053549. The next prime is 30053557. The reversal of 30053550 is 5535003.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30053557) 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 11 ways as a sum of consecutive naturals, for example, 100029 + ... + 100328.

It is an arithmetic number, because the mean of its divisors is an integer number (3105549).

Almost surely, 2^30053550 is an apocalyptic number.

30053550 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30053550 is an abundant number, since it is smaller than the sum of its proper divisors (44479626).

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

30053550 is a wasteful number, since it uses less digits than its factorization.

30053550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200372 (or 200367 counting only the distinct ones).

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

The square root of 30053550 is about 5482.1118193630. Note that the first 3 decimals coincide. The cubic root of 30053550 is about 310.9080210346.

Adding to 30053550 its reverse (5535003), we get a palindrome (35588553).

It can be divided in two parts, 30053 and 550, that added together give a palindrome (30603).

The spelling of 30053550 in words is "thirty million, fifty-three thousand, five hundred fifty".