30255155 has 16 divisors (see below), whose sum is σ = 43934400. Its totient is φ = 19525632.

The previous prime is 30255151. The next prime is 30255161. The reversal of 30255155 is 55155203.

It is not a de Polignac number, because 30255155 - 2² = 30255151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30255151) 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 15 ways as a sum of consecutive naturals, for example, 24830 + ... + 26019.

It is an arithmetic number, because the mean of its divisors is an integer number (2745900).

Almost surely, 2^30255155 is an apocalyptic number.

30255155 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

30255155 is a deficient number, since it is larger than the sum of its proper divisors (13679245).

30255155 is a wasteful number, since it uses less digits than its factorization.

30255155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50878.

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 30255155 is about 5500.4686163999. The cubic root of 30255155 is about 311.6016825569.

The spelling of 30255155 in words is "thirty million, two hundred fifty-five thousand, one hundred fifty-five".