30013155 has 12 divisors (see below), whose sum is σ = 52022880. Its totient is φ = 16006992.

The previous prime is 30013153. The next prime is 30013163. The reversal of 30013155 is 55131003.

It is a happy number.

It is not a de Polignac number, because 30013155 - 2¹ = 30013153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30013153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 333435 + ... + 333524.

It is an arithmetic number, because the mean of its divisors is an integer number (4335240).

Almost surely, 2^30013155 is an apocalyptic number.

30013155 is a deficient number, since it is larger than the sum of its proper divisors (22009725).

30013155 is a wasteful number, since it uses less digits than its factorization.

30013155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666970 (or 666967 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 30013155 is about 5478.4263251412. The cubic root of 30013155 is about 310.7686613403.

Adding to 30013155 its reverse (55131003), we get a palindrome (85144158).

The spelling of 30013155 in words is "thirty million, thirteen thousand, one hundred fifty-five".