30506055 has 16 divisors (see below), whose sum is σ = 49849344. Its totient is φ = 15923360.

The previous prime is 30506033. The next prime is 30506059. The reversal of 30506055 is 55060503.

It is not a de Polignac number, because 30506055 - 2⁵ = 30506023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30506059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20931 + ... + 22340.

It is an arithmetic number, because the mean of its divisors is an integer number (3115584).

Almost surely, 2^30506055 is an apocalyptic number.

30506055 is a deficient number, since it is larger than the sum of its proper divisors (19343289).

30506055 is a wasteful number, since it uses less digits than its factorization.

30506055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43326.

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

The square root of 30506055 is about 5523.2286753311. The cubic root of 30506055 is about 312.4606627818.

Adding to 30506055 its reverse (55060503), we get a palindrome (85566558).

The spelling of 30506055 in words is "thirty million, five hundred six thousand, fifty-five".