30550155 has 8 divisors (see below), whose sum is σ = 48880272. Its totient is φ = 16293408.

The previous prime is 30550153. The next prime is 30550171. The reversal of 30550155 is 55105503.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30550155 - 2¹ = 30550153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30550151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1018324 + ... + 1018353.

It is an arithmetic number, because the mean of its divisors is an integer number (6110034).

Almost surely, 2^30550155 is an apocalyptic number.

30550155 is a deficient number, since it is larger than the sum of its proper divisors (18330117).

30550155 is a wasteful number, since it uses less digits than its factorization.

30550155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2036685.

The product of its (nonzero) digits is 1875, while the sum is 24.

The square root of 30550155 is about 5527.2194637087. The cubic root of 30550155 is about 312.6111561904.

Adding to 30550155 its reverse (55105503), we get a palindrome (85655658).

The spelling of 30550155 in words is "thirty million, five hundred fifty thousand, one hundred fifty-five".