30030155 has 4 divisors (see below), whose sum is σ = 36036192. Its totient is φ = 24024120.

The previous prime is 30030151. The next prime is 30030173. The reversal of 30030155 is 55103003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55103003 = 839 ⋅65677.

It is not a de Polignac number, because 30030155 - 2² = 30030151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30030151) 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 3 ways as a sum of consecutive naturals, for example, 3003011 + ... + 3003020.

It is an arithmetic number, because the mean of its divisors is an integer number (9009048).

Almost surely, 2^30030155 is an apocalyptic number.

30030155 is a deficient number, since it is larger than the sum of its proper divisors (6006037).

30030155 is an equidigital number, since it uses as much as digits as its factorization.

30030155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6006036.

The product of its (nonzero) digits is 225, while the sum is 17.

The square root of 30030155 is about 5479.9776459398. The cubic root of 30030155 is about 310.8273252837.

Adding to 30030155 its reverse (55103003), we get a palindrome (85133158).

The spelling of 30030155 in words is "thirty million, thirty thousand, one hundred fifty-five".