30305055 has 48 divisors (see below), whose sum is σ = 54391680. Its totient is φ = 14393280.

The previous prime is 30305039. The next prime is 30305059. The reversal of 30305055 is 55050303.

It is not a de Polignac number, because 30305055 - 2⁴ = 30305039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30305059) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 106944 + ... + 107226.

It is an arithmetic number, because the mean of its divisors is an integer number (1133160).

Almost surely, 2^30305055 is an apocalyptic number.

30305055 is a deficient number, since it is larger than the sum of its proper divisors (24086625).

30305055 is a wasteful number, since it uses less digits than its factorization.

30305055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 361 counting only the distinct ones).

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

The square root of 30305055 is about 5505.0027247950. The cubic root of 30305055 is about 311.7728972746.

Adding to 30305055 its reverse (55050303), we get a palindrome (85355358).

The spelling of 30305055 in words is "thirty million, three hundred five thousand, fifty-five".