30307055 has 4 divisors (see below), whose sum is σ = 36368472. Its totient is φ = 24245640.

The previous prime is 30307049. The next prime is 30307063. The reversal of 30307055 is 55070303.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30307055 - 2⁸ = 30306799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30307055.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3030701 + ... + 3030710.

It is an arithmetic number, because the mean of its divisors is an integer number (9092118).

Almost surely, 2^30307055 is an apocalyptic number.

30307055 is a deficient number, since it is larger than the sum of its proper divisors (6061417).

30307055 is an equidigital number, since it uses as much as digits as its factorization.

30307055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6061416.

The product of its (nonzero) digits is 1575, while the sum is 23.

The square root of 30307055 is about 5505.1843747508. The cubic root of 30307055 is about 311.7797556693.

Adding to 30307055 its reverse (55070303), we get a palindrome (85377358).

The spelling of 30307055 in words is "thirty million, three hundred seven thousand, fifty-five".