30115153 has 4 divisors (see below), whose sum is σ = 30164580. Its totient is φ = 30065728.

The previous prime is 30115123. The next prime is 30115159. The reversal of 30115153 is 35151103.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4592449 + 25522704 = 2143^2 + 5052^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30115153 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30115153.

It is not an unprimeable number, because it can be changed into a prime (30115159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23788 + ... + 25021.

It is an arithmetic number, because the mean of its divisors is an integer number (7541145).

Almost surely, 2^30115153 is an apocalyptic number.

It is an amenable number.

30115153 is a deficient number, since it is larger than the sum of its proper divisors (49427).

30115153 is an equidigital number, since it uses as much as digits as its factorization.

30115153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49426.

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 30115153 is about 5487.7274895898. The cubic root of 30115153 is about 311.1203064979.

Adding to 30115153 its reverse (35151103), we get a palindrome (65266256).

The spelling of 30115153 in words is "thirty million, one hundred fifteen thousand, one hundred fifty-three".